CCode.cpp

#include <stdio.h>  

int main()  

{  

    // declare local variables  

    char opt;  

    int n1, n2;   

    float res;  

    printf (" Choose an operator(+, -, *, /) to perform the operation in C Calculator \n ");  

    scanf ("%c", &opt); // take an operator  

    if (opt == '/' )  

    {  

        printf (" You have selected: Division");  

    }  

    else if (opt == '*')  

    {  

        printf (" You have selected: Multiplication");  

     }  

       

    else if (opt == '-')  

    {  

        printf (" You have selected: Subtraction");  

     }  

        else if (opt == '+')  

    {  

        printf (" You have selected: Addition");  

     }     

    printf (" \n Enter the first number: ");  

    scanf(" %d", &n1); // take fist number  

    printf (" Enter the second number: ");  

    scanf (" %d", &n2); // take second number  

      

    switch(opt)  

    {  

        case '+':  

            res = n1 + n2; // add two numbers  

            printf (" Addition of %d and %d is: %.2f", n1, n2, res);  

            break;  

          

        case '-':  

            res = n1 - n2; // subtract two numbers  

            printf (" Subtraction of %d and %d is: %.2f", n1, n2, res);  

            break;  

              

        case '*':  

            res = n1 * n2; // multiply two numbers  

            printf (" Multiplication of %d and %d is: %.2f", n1, n2, res);  

            break;            

          

        case '/':  

            if (n2 == 0)   // if n2 == 0, take another number  

            {  

                printf (" \n Divisor cannot be zero. Please enter another value ");  

                scanf ("%d", &n2);        

                }  

            res = n1 / n2; // divide two numbers  

            printf (" Division of %d and %d is: %.2f", n1, n2, res);  

            break;  

        default:  /* use default to print default message if any condition is not satisfied */  

            printf (" Something is wrong!! Please check the options ");               

    }  

    return 0;  

}