calci.c

#include<stdio.h> 
int add(int x, int y) 
{ 
 int c; 
 c=x+y; 
 printf("\nThe sum is=%d\n\n",c); 
} 
int sub(int d, int e) 
{ 
 int f; 
    f=d-e; 
    printf("\nThe subtraction is=%d\n\n",f); 
} 
int mult(int x, int y) 
{ 
 int i; 
 i=x*y; 
 printf("\nThe multiplication is=%d\n\n",i); 
} 
double div(double x, double y) 
{ 
    double m; 
    m=x/y; 
    printf("\nDivison is=%.3lf\n\n",m); 
} 
int sq(int x, int y) 
{ 
    int sqr1,sqr2; 
    sqr1=x*x; 
    sqr2=y*y; 
    printf("\nSquare of %d is=%d\n",x,sqr1); 
    printf("\nSquare of %d is=%d\n\n",y,sqr2); 
} 
int cube(int x, int y) 
{ 
    int cub1,cub2; 
    cub1=x*x*x; 
    cub2=y*y*y; 
    printf("\nCube of %d is=%d\n",x,cub1); 
    printf("\nCube of %d is=%d\n\n",y,cub2); 
} 
int percentage(int x,int y) 
{ 
    float per1,per2; 
    per1=100*x/y; 
    per2=100*y/x; 
    printf("\n%d is %.3f %c of %d\n",x,per1,37,y); 
    printf("\n%d is %.3f %% of %d\n\n",y,per2,x);
} 
 
int main() 
{ 
 int x,y,options=0;  
 printf("\nWelcome! What do you want to perform your calculator?\n"); 
 printf("\n1.For Addition enter 1\n\n2.For Subtraction enter 2\n"); 
 printf("\n3.For Multiplication enter 3\n\n4.For Division enter 4\n"); 
 printf("\n5.To find Square of the numbers enter 5\n\n6.To find Cube of the numbers enter 6\n"); 
 printf("\n7.For Percentage of both numbers enter 7\n"); 
 printf("\nEnter your choice:"); 
 scanf("%d",&options); 
 printf("Enter numbers one by one:\n"); 
 scanf("%d%d",&x,&y);
 switch(options) 
 { 
 case 1: 
 add(x,y); 
 break; 
 case 2: 
 sub(x,y); 
 break; 
 case 3: 
 mult(x,y); 
 break; 
 case 4: 
 div(x,y); 
 break; 
 case 5: 
 sq(x,y); 
 break; 
 case 6: 
 cube(x,y); 
 break; 
 case 7: 
 percentage(x,y); 
 break; 
 default: 
    printf("\n\nPlease enter number from the given list!\n"); 
    main(); 
} 
}