1: #include<stdio.h>
2: #include<conio.h>
3: void squrecube(float x,float *s,float *c)
4: {
5: *s=x*x;
6: *c=x*x*x;
7: }
8: void main()
9: {
10: float x,s,c;
11: printf("enter the num:");
12: scanf("%f",&x);
13: squrecube(x,&s,&c);
14: printf("squre=%f cube=%f",s,c);
15: getch();
16: }
1: #include<stdio.h>
2: #include<conio.h>
3: void main()
4: {
5: int i,j,n,s;
6: printf("Enter the num of rows:\n");
7: scanf("%d",&n);
8: for(i=1;i<=n;i++)
9: {
10: for(s=n-i;s>=1;s--)
11: {
12: printf(" ");
13: }
14: for(j=1;j<=i;j++)
15: {
16: printf("%d ",j);
17: }
18: printf("\n");
19: }
20: getch();
21: }
1: #include<stdio.h> 2: #include<conio.h> 3: #include<math.h> 4: #include<stdlib.h>5: void main(int argc,char *argv[])
6: {7: float x;
8: if(argc<2)
9: {10: printf("Insufficient number of arguments supplied:\n");
11: getch(); 12: exit(0); 13: } 14: x=atof(argv[1]);15: printf("cube root of %f is %f\n",x,pow(x,1.0/3.0));
16: getch(); 17: } 1: #include<stdio.h> 2: #include<conio.h>3: #include<string.h>
4: void main()
5: {6: char str1[40];
7: char str2[40];
8: int n;
9: printf("Enter the first string:\n");
10: gets(str1);11: printf("Enter the second string:\n");
12: gets(str2); 13: n=strcmp(str1,str2);14: if(n==0)
15: {16: printf("the strings are identical\n");
17: }18: else
19: {20: printf("if sorted alphabetically the strings will come in following order\n");
21: }22: if(n<0)
23: { 24: puts(str1); 25: puts(str2); 26: }27: if(n>0)
28: { 29: puts(str2); 30: puts(str1); 31: } 32: getch(); 33: } 1: #include<stdio.h> 2: #include<conio.h>3: #include<string.h>
4: void main()
5: {6: char str1[40];
7: char str2[40];
8: printf("Enter the first string:\n");
9: gets(str1);10: printf("Enter the second string:\n");
11: gets(str2); 12: strcat(str1,str2);13: printf("String 1 is now:\n");
14: puts(str1); 15: getch(); 16: } 1: #include<stdio.h> 2: #include<conio.h>3: #include<string.h>
4: void main()
5: {6: int i;
7: char sname[3][40];
8: char yourname[40];
9: for(i=0;i<3;i++)
10: {11: printf("Enter the name of the student:\n");
12: gets(yourname); 13: strcpy(sname[i],yourname); 14: }15: for(i=0;i<3;i++)
16: puts(sname[i]); 17: getch(); 18: }#include<stdio.h>
#include<conio.h>
#include<math.h>
float expr(float);
void main()
{
float x,value;
printf("Enter the value of x ");
scanf("%f",&x);
value=(*expr)(x);
printf("value =%f\n",value);
getch();
}
float expr(float x)
{
return(x*x-2);
}
1: #include<stdio.h> 2: #include<conio.h>3: float trace(int n,float **x);
4: void main()
5: {6: int i,j;
7: float *xx[10];
8: float t,x[10][10],num;
9: int n;
10: printf("Enter the size of matrix:\n");
11: scanf("%d",&n);
12: printf("Enter the elements:\n");
13: for(i=0;i<n;i++)
14: {15: for(j=0;j<n;j++)
16: {17: scanf("%f",&num);
18: x[i][j]=num; 19: } 20: }21: for(i=0;i<n;i++)
22: xx[i]=x[i]; 23: t=trace(n,xx);24: printf("trace of matrix is: %f",t);
25: getch(); 26: } 27: 28: float trace(int n,float **x)
29: {30: int i;
31: float t=0.0;
32: for(i=0;i<n;i++)
33: t=t+*(*(x+i)+i);34: return(t);
35: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: int a,b,x,y;
6: a=b=2; 7: x=a++; 8: y=++b;9: printf("At this point \n");
10: printf("Value of x= %d\n",x);
11: printf("Value of y= %d\n",y);
12: getch(); 13: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: float x[10][10];
6: int i,j,nr,nc;
7: printf("Enter the num of rows:\n");
8: scanf("%d",&nr);
9: printf("Enter the num of columns:\n");
10: scanf("%d",&nc);
11: printf("Enter the elements of matrix:\n");
12: for(i=0;i<nr;i++)
13: {14: for(j=0;j<nc;j++)
15: {16: scanf("%f",&x[i][j]);
17: }18: printf("\n");
19: }20: printf("The matrix is:\n\n");
21: for(i=0;i<nr;i++)
22: {23: for(j=0;j<nc;j++)
24: {25: printf("%.2f ",*(*(x+i)+j));
26: }27: printf("\n");
28: } 29: getch(); 30: } 1: #include<stdio.h> 2: #include<conio.h>3: void readdata(int *size,float *addx)
4: {5: int i;
6: float n;
7: char ch;
8: printf("Enter the elements of array:\n");
9: i=0;10: do
11: {12: scanf("%f%c",&n,&ch);
13: *(addx+i)=n; 14: i++;15: }while(ch!='\n');
16: *size=i; 17: } 18: 19: void displayarray(int size,float *addx)
20: {21: int i;
22: for(i=0;i<size;i++)
23: printf("%.2f ",*(addx+i));
24: printf("\n");
25: } 26: 27: void sort(int size,float *addx)
28: {29: int i,j;
30: for(j=0;j<size-1;j++)
31: for(i=0;i<size-1;i++)
32: if(*(addx+i)>*(addx+i+1))
33: {34: int p,q;
35: p=*(addx+i); 36: q=*(addx+i+1); 37: *(addx+i)=q; 38: *(addx+i+1)=p; 39: } 40: } 41: 42: void main()
43: {44: int i,size;
45: float x[50];
46: readdata(&size,x);47: printf("Array is:\n");
48: displayarray(size,x); 49: sort(size,x);50: printf("sorted array is:\n");
51: displayarray(size,x); 52: getch(); 53: } 1: #include<conio.h> 2: #include<stdio.h>3: void readdata(int *size,float *addx)
4: {5: int i;
6: float n;
7: char ch;
8: printf("\nEnter the elements of the array:\n");
9: i=0;10: do
11: {12: scanf("%f%c",&n,&ch);
13: *(addx+i)=n; 14: i++;15: }while(ch!='\n');
16: *size=i; 17: }18: float maxno(int size,float *addx)
19: {20: int i;
21: float max=-1.0E38;
22: for(i=0;i<size;i++)
23: {24: if((*addx+i)>max)
25: { 26: max=*(addx+i); 27: } 28: }29: return(max);
30: }31: void main()
32: {33: int size;
34: float max;
35: int i;
36: float x[50];
37: readdata(&size,x); 38: max=maxno(size,x);39: printf("\nThe array is: ");
40: for(i=0;i<size;i++)
41: printf("%.2f ",x[i]);
42: printf("\nThe maximum No is: %f",max);
43: getch(); 44: } 1: #include<stdio.h> 2: #include<conio.h>3: float maxno(int size,float *addx);
4: void main()
5: {6: int i,size;
7: float x[50],max;
8: char ch;
9: printf("\nEnter the elements of array:\n");
10: i=0;11: do
12: {13: scanf("%f%c",&x[i],&ch);
14: i++;15: }while(ch!='\n');
16: size=i; 17: max=maxno(size,x);18: printf("\nThe maximum No is: %.2f",max);
19: getch(); 20: }21: float maxno(int size,float *addx)
22: {23: int i;
24: float max=-1.0E38;
25: for(i=0;i<size;i++)
26: if(*(addx+i)>max)
27: max=*(addx+i);28: return(max);
29: } 1: #include<stdio.h> 2: #include<conio.h>3: void readdata(int *size,float *x);
4: void main()
5: {6: int size;
7: int i;
8: float x[50];
9: readdata(&size,x); //for X[i] instead of &x[0] one can take x as address of array
10: printf("\nThe array is ");
11: for(i=0;i<size;i++)
12: printf("%.2f ",x[i]);
13: getch(); 14: }15: void readdata(int *size,float *x)
16: {17: int i;
18: float n;
19: char ch;
20: printf("\nEnter the elements of array:\n");
21: i=0;22: do
23: {24: scanf("%f%c",&n,&ch);
25: *(x+i)=n; 26: i++;27: }while(ch!='\n');
28: *size=i; 29: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: float x[]={1.0,2.0,3.0,4.0,5.0,6.0};
6: int i;
7: float *add;
8: for(i=0;i<6;i++)
9: { 10: add=&x[i];11: printf("Address of x[%d] is: %ld\n",i,add);
12: } 13: getch(); 14: } 1: #include<stdio.h> 2: #include<conio.h> 3: #include<stdlib.h> 4: #include<math.h>5: #define PIE 3.14
6: 7: void angles(float x,float y,float z, float *a1,float *a2,float *a3);
8: void main()
9: {10: float a,b,c,A,B,C;
11: float p,q,r,P,Q,R;
12: printf("Enter the sides of ABC:\n");
13: scanf("%f%f%f",&a,&b,&c);
14: printf("Enter the sides of PQR:\n");
15: scanf("%f%f%f",&p,&q,&r);
16: angles(a,b,c,&A,&B,&C); 17: angles(p,q,r,&P,&Q,&R);18: printf("Angle A= %.2f\n",A);
19: printf("Angle B= %.2f\n",B);
20: printf("Angle C= %.2f\n",C);
21: printf("Angle P= %.2f\n",P);
22: printf("Angle Q= %.2f\n",Q);
23: printf("Angle R= %.2f\n",R);
24: getch(); 25: }26: void angles(float x,float y,float z, float *a1,float *a2,float *a3)
27: { 28: *a1=(180.0/PIE)*acos((y*y+z*z-x*x)/(2.0*y*z)); 29: *a2=(180.0/PIE)*acos((x*x+z*z-y*y)/(2.0*z*x)); 30: *a3=(180.0/PIE)*acos((y*y+x*x-z*z)/(2.0*y*x)); 31: } 1: #include<stdio.h> 2: #include<conio.h> 3: #include<math.h> 4: #include<stdlib.h>5: void roots(float a,float b,float c,float *r1,float *r2);
6: void main()
7: {8: float a,b,c,root1,root2;
9: printf("Enter the coefficient of a,b,c:\n");
10: scanf("%f%f%f",&a,&b,&c);
11: roots(a,b,c,&root1,&root2);12: printf("Roots of the equation are %.2f and %.2f\n",root1,root2);
13: getch(); 14: }15: void roots(float a,float b,float c,float *r1,float *r2)
16: {17: float d;
18: d=b*b-4.0*a*c;19: if(d<0)
20: {21: printf("no real root\n");
22: getch(); 23: exit(0); 24: }25: else
26: *r1=(-b+sqrt(d))/(2.0*a); 27: *r2=(-b-sqrt(d))/(2.0*a); 28: } 1: #include<stdio.h> 2: #include<conio.h> 3: #include<stdlib.h>4: void main()
5: {6: int x,i;
7: int *xptr=&x;
8: srand(12345); 9: *xptr=rand();10: printf("x=%d\n",x);
11: getch(); 12: } 1: #include<stdio.h> 2: #include<conio.h> 3: #include<stdlib.h>4: void main()
5: {6: int x,i;
7: int *a_x;
8: x=rand(); 9: a_x=&x;10: printf("x=%d\n",*a_x);
11: getch(); 12: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: float x;
6: float *address_of_x;
7: address_of_x=&x;8: printf("Address of x= %ld\n",address_of_x);
9: getch(); 10: } 1: #include<stdio.h> 2: #include<conio.h> 3: #include<stdlib.h>4: #define developing 0
5: #define debug
6: void main()
7: {8: int i,j,k;
9: char cd;
10: clrscr();11: #if developing
12: //To be compiled if developing =1
13: int n=10;
14: float x[]={20,25,32,50,17,12,28,30,15};
15: #else
16: //To be compiled if developing =0
17: int n;
18: float x[50];
19: printf("\nNo of elements in array:");
20: scanf("%d",&n);
21: for(i=0;i<n;i++)
22: {23: printf("Enter the element no %d: ",i);
24: scanf("%f",&x[i]);
25: }26: #endif
27: 28: printf("\n\nThe original array is:\n");
29: for(i=0;i<n;i++)
30: printf("%.2f ",x[i]);
31: printf("\n");
32: for(j=0;j<n-1;j++)
33: for(i=0;i<n-1;i++)
34: {35: if(x[i]<x[i+1])
36: {37: float p,q;
38: p=x[i]; 39: q=x[i+1]; 40: x[i]=q; 41: x[i+1]=p;42: #if defined debug
43: //To be compiled if degub is defined
44: printf("\nThe interchangeing element %d and %d:\n",i,i+1);
45: for(k=0;k<n;k++)
46: printf("%.2f ",x[k]);
47: printf("\n");
48: printf("\ncontinue debugging N/Y: ");
49: cd=getche();50: if(cd=='N'||cd=='n')
51: exit(0);52: #endif
53: } 54: }55: printf("\nThe sorted array is:\n");
56: for(i=0;i<n;i++)
57: printf("%.2f ",x[i]);
58: printf("\n");
59: getch(); 60: } 1: #include<stdio.h> 2: #include<conio.h>3: #define square(x) x*x
4: void main()
5: {6: printf("square of 3 is:%d\n",square(3));
7: printf("square of 5 is:%d\n",square(5));
8: getch(); 9: } 1: #include<stdio.h> 2: #include<conio.h>3: void readdata();
4: float getaverage();
5: float x,y,z;
6: void main()
7: {8: float average;
9: readdata(); 10: average=getaverage();11: printf("Average = %f\n",average);
12: getch(); 13: }14: void readdata()
15: {16: printf("Enter x,y and z:\n");
17: scanf("%f%f%f",&x,&y,&z);
18: }19: float getaverage()
20: {21: float av;
22: av=(x+y+z)/3;23: return(av);
24: } 1: #include<stdio.h> 2: #include<conio.h> 3: #include<math.h>4: void main()
5: {6: int x;
7: printf("Enter an interger num:\n");
8: scanf("%d",&x);
9: if(x>0)
10: {11: float r;
12: r=1/float(x);
13: printf("\nReciprocal of %d is: %f\n",x,r);
14: }15: else
16: printf("X is too small to evaluate reciprocal:");
17: getch(); 18: } 1: #include<stdio.h> 2: #include<conio.h> 3: #include<math.h>4: void main()
5: {6: int n;
7: floar r;8: printf("Enter an interger no\n");
9: scanf("%d",&n);
10: r=sqrt(n);11: printf("Square root of %d is: %f\n",n,r);
12: getch(); 13: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: int i;
6: pritf("Character ASCII NO\n");
7: pritf("-------- -------\n");
8: for(i=97;i<=122;i++)
9: printf("%c %3d",i,i);
10: getch(); 11: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: int k;
6: pritf("\nDecimal Octal Hexadecimal");
7: for(k=0;k<=16;k++)
8: printf("%5d %5o %5x",k,k,k);
9: getch(); 10: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: int i,j,u,v,k,m,x[10][10],y[10][10];
6: printf("Enter the no of row of matrix:");
7: scanf("%d",&k);
8: printf("\nEnter the no of column of matrix:");
9: scanf("%d",&m);
10: printf("Enter the elements:\n");
11: for(i=0;i<k;i++)
12: for(j=0;j<m;j++)
13: {14: scanf("%d",&x[i][j]);
15: }16: for(u=0;u<m;u++)
17: for(v=0;v<k;v++)
18: { 19: y[u][v]=x[v][u]; 20: }21: printf("Original Matrix:\n\n");
22: for(i=0;i<k;i++)
23: {24: for(j=0;j<m;j++)
25: {26: printf("%3d ",x[i][j]);
27: }28: printf("\n");
29: }30: printf("Traspose Matrix:\n\n");
31: for(u=0;u<m;u++)
32: {33: for(v=0;v<k;v++)
34: {35: printf("%3d ",y[u][v]);
36: }37: printf("\n");
38: } 39: getch(); 40: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: int i,j,x[3][4];
6: printf("Desired 3x4 matrix is:\n\n");
7: for(i=0;i<3;i++)
8: {9: for(j=0;j<4;j++)
10: {11: if(i!=j)
12: x[i][j]=i+j;13: else if(i==j)
14: x[i][j]=0;15: printf("%d ",x[i][j]);
16: }17: printf("\n");
18: } 19: getch(); 20: }t1=a*(b+c)+b*(c+a)+c*(a+b)
t2=a*a*(b*b+c*c)+b*b*(a*a+c*c)+c*c*(b*b+a*a)
1: #include<stdio.h> 2: #include<conio.h> 3: #include<math.h> 4: 5: void main()
6: {7: float a,b,c,diff;
8: float t1=0.0,t2=0.0;
9: printf("Enter the value of a b c:\n");
10: scanf("%f%f%f",&a,&b,&c);
11: 12: /*Evalution of t1*/
13: t1+=a*(b+c); 14: t1+=b*(c+a); 15: t1+=c*(a+b); 16: 17: /*Evalution of t2*/
18: t2+=a*a*(b*b+c*c); 19: t2+=b*b*(c*c+a*a); 20: t2+=c*c*(a*a+b*b); 21: t2=sqrt(t2); 22: 23: diff=t1-t2; 24: 25: /*Output of results*/
26: printf("t1= %10.3f\n",t1);
27: printf("t2= %10.3f\n",t2);
28: printf("diff= %10.3f\n",diff);
29: getch(); 30: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: char line[80];
6: int i,l,k;
7: clrscr();8: printf("Enter the line\n");
9: for(i=0;i<80;i++)
10: {11: scanf("%c",&line[i]);
12: if(line[i]=='\n')
13: break;
14: } 15: l=i;16: printf("Enter the num for coding: ");
17: scanf("%d",&k);
18: printf("\nCoded text is:\n");
19: for(i=0;i<l;i++)
20: printf("%4d",line[i]+k);
21: getch(); 22: } 1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: char line[80];
6: int i,l;
7: printf("Enter the Line:\n");
8: for(i=0;i<80;i++)
9: {10: scanf("%c",&line[i]);
11: if(line[i]=='\n')
12: break;
13: } 14: l=i;15: printf("the characters in the line are\n");
16: for(i=0;i<l;i++)
17: printf("%3d %c\n",i,line[i]);
18: getch(); 19: } 1: #include<stdio.h>
2: #include<conio.h>
3: #include<stdlib.h>
4: void getproduct(int,int,int,float[10][10],float[10][10]);
5: void main()
6: {
7: int i,j,k,m1,n1,m2,n2;
8: float x[10][10],y[10][10];
9: printf("\nEnter the rows of matrix X: ");
10: scanf("%d",&m1);
11: printf("\nEnter the clomuns of matrix X: ");
12: scanf("%d",&n1);
13: printf("\nEnter the rows of matrix Y: ");
14: scanf("%d",&m2);
15: printf("\nEnter the columns of matrix y: ");
16: scanf("%d",&n2);
17: if(n1==m2)
18: k=n1;
19: else
20: {
21: printf("\nMultiplication of X and Y is not possible:");
22: getch();
23: exit(0);
24: }
25: printf("\nEnter the elements of first matrix:\n");
26: for(i=0;i<m1;i++)
27: for(j=0;j<n1;j++)
28: scanf("%f",&x[i][j]);
29: printf("\nEnter the elements of second matrix:\n");
30: for(i=0;i<m2;i++)
31: for(j=0;j<n2;j++)
32: scanf("%f",&y[i][j]);
33: getproduct(m1,k,n2,x,y);
34: getch();
35: }
36: void getproduct(int m1,int k,int n2,float x[10][10],float y[10][10])
37: {
38: int u,v,i;
39: float z[10][10];
40: for(u=0;u<m1;u++)
41: for(v=0;v<n2;v++)
42: {
43: z[u][v]=0.0;
44: for(i=0;i<k;i++)
45: z[u][v]+=x[u][i]*y[i][v];
46: }
47: printf("MATRIX Z=X*Y\n\n");
48: for(u=0;u<m1;u++)
49: {
50: for(v=0;v<n2;v++)
51: {
52: printf("%8.3f",z[u][v]);
53: }
54: printf("\n");
55: }
56: getch();
57: }
1: #include<stdio.h> 2: #include<conio.h>3: void displaymatrix(int nr,int nc,int x[10][10])
4: {5: int i,j;
6: printf("The matrix is given below:\n\n");
7: for(i=0;i<nr;i++)
8: {9: for(j=0;j<nc;j++)
10: {11: printf("%d ",x[i][j]);
12: }13: printf("\n");
14: } 15: }16: void main()
17: {18: int i,j,nr,nc,x[10][10];
19: printf("\nNo of rows:");
20: scanf("%d",&nr);
21: printf("\nNo of columns:");
22: scanf("%d",&nc);
23: for(i=0;i<nr;i++)
24: for(j=0;j<nc;j++)
25: x[i][j]=2*i+3*j; 26: displaymatrix(nr,nc,x); 27: getch(); 28: } 1: #include<stdio.h> 2: #include<conio.h> 3: #include<stdlib.h>4: void main()
5: {6: int x[10][10],y[10][10],xr,xc,yr,yc,i,j,equal=1;
7: printf("Matrix X:\n\n");
8: printf("Number of rows: ");
9: scanf("%d",&xr);
10: printf("\nNumber of clomuns: ");
11: scanf("%d",&xc);
12: for(i=0;i<xr;i++)
13: {14: for(j=0;j<xc;j++)
15: {16: printf("\nEnter the element x[%d][%d]",i,j);
17: scanf("%d",&x[i][j]);
18: } 19: }20: printf("Matrix Y\n\n");
21: printf("Number of rows: ");
22: scanf("%d",&yr);
23: printf("\nNumber of columns: ");
24: scanf("%d",&yc);
25: for(i=0;i<yr;i++)
26: {27: for(j=0;j<yc;j++)
28: {29: printf("\nEnter the element y[%d][%d]",i,j);
30: scanf("%d",&y[i][j]);
31: } 32: }33: if(xr!=yr||xc!=yc)
34: {35: printf("\nMatrices cant be campare No of rows or columns are diffrent:\n");
36: getch(); 37: exit(1); 38: }39: else
40: {41: for(i=0;i<xr;i++)
42: for(j=0;j<xc;j++)
43: if(x[i][j]!=y[i][j])
44: { 45: equal=0;46: break;
47: }48: if(equal)
49: printf("\nMatrices are identical");
50: else
51: printf("\nmatrice are not identical");
52: } 53: getch(); 54: }
1: #include<stdio.h>
2: #include<conio.h>
3: void main()
4: {
5: int i,j,sum=0;
6: int x[4][4]={
7: {2,4,6,8},
8: {3,5,7,9},
9: {4,2,6,8},
10: {1,3,5,7},
11: };
12: for(i=0;i<4;i++)
13: {
14: for(j=0;j<4;j++)
15: {
16: if(i==j)
17: sum+=x[i][j];
18: printf("%5d",x[i][j]);
19: }
20: printf("\n");
21: }
22: printf("the trace of the matrix is: %d\n",sum);
23: getch();
24: }
1: #include<stdio.h> 2: #include<conio.h>3: void main()
4: {5: int i,j,r,c;
6: int x[10][10];
7: printf("Enter the number of rows: ");
8: scanf("%d",&r);
9: printf("Enter the number of columns: ");
10: scanf("%d",&c);
11: for(i=0;i<r;i++)
12: {13: for(j=0;j<c;j++)
14: { 15: x[i][j]=2*i+3*j; 16: } 17: }18: printf("The matrix is given below\n\n");
19: for(i=0;i<r;i++)
20: {21: for(j=0;j<c;j++)
22: {23: printf("%5d",x[i][j]);
24: }25: printf("\n");
26: } 27: getch(); 28: }