Answer :

#include<stdio.h>  //header file contains the function,decleraction and macro defination of key words used in code.

int main ()

{

int num1,num2,op; //adressing the variables

printf("Enter the First number : ");  //output

scanf("%d",&num1);   //stores the input from the user

printf("Enter the second number : ");  //output

scanf("%d",&num2);  //stores the input from the user

printf("Enter the number of operator you want to perform your task \n1.'+'\t\t2.'-'\n3.'/'\t\t4.'*'\n");  //output

scanf("%d",&op);

switch (op)

{

case 1 :

printf("The Addition of the two numbers are %d",num1+num2); //output

break;

case 2 :

printf("The Subraction of the two numbers are %d",num1-num2); //output

break;

case 3 :

printf("The division of the two numbers are %d",num1/num2); //output

break;

case 4:

printf("The Multiplication of the two numbers are %d",num1*num2); //output

break;

default :

printf("you enter a wrong choice");  //output

break; 

}

}

Output :