PROJECT Simple Smart Calculator in C programming language


Code :

#include<stdio.h>
#include<conio.h>
void add()
{
    int a,b,c;
    printf("enter two number\n");
    scanf("%d%d",&a,&b);
    c=a+b;
    printf("the sum is :%d\n",c);
}
void sub()
{
    int a,b,c;
    printf("enter two number\n");
    scanf("%d%d",&a,&b);
    c=a-b;
    printf("the subtraction is :%d\n",c);
}
void div()
{
    int a,b,c;
    printf("enter two number\n");
    scanf("%d%d",&a,&b);
    c=a/b;
    printf("the division is :%d\n",c);
}
void mul()
{
    int a,b,c;
    printf("enter two number\n");
    scanf("%d%d",&a,&b);
    c=a*b;
    printf("the multiplication is :%d\n",c);
}
void main()
{
    while(1)
    {
    printf("--------------------Simple Smart Calculator-------------------\n");
    printf(" 1.Addition Two number\n ");
    printf("2.Subtraction Two number\n ");
    printf("3.Division \n ");
    printf("4.Multiplication Two number\n ");
    printf("5.Exit\n ");
    printf("--------------------------------------------------------------\n");
    int num;
    printf("Enter the operation Number\n ");
    scanf("%d",&num);
    switch(num)
    {
    case 1:
                 add();
                 break;

    case 2:
                 sub() ;
                 break;
    case 3:
                 div();
                 break;
    case 4:
                 mul();
                 break;
    default:
                             printf("operation does not exist\n");
                             break;
    case 5:
                 exit(0);
    }
  }
    getch();

}

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