Lab Record Program No 5

 5.Write a C Program to create a Simple Calculator. 

#include<stdio.h>

 #include <conio.h>

void main()

 { 

 char operator; 

 int n1, n2; 

 printf("\nEnter an operator (+, -, , /,%): \n"); 

scanf("%c", &operator);

 printf("Enter two operands: "); 

 scanf("%d %d",&n1, &n2); 

switch(operator) 

 {

  case '+': printf("\n%d + %d = %d\n",n1, n2, n1+n2);

                 break;

 case '-': printf("\n%d - %d = %d\n",n1, n2, n1-n2);

                 break; 

case '*': printf("\n%d * %d = %d\n",n1, n2, n1*n2); 

             break; 

case '/': printf("\n%d / %d = %d\n",n1, n2, n1/n2); 

             break;

 case '%': printf("\n%d % %d = %d\n",n1, n2, n1%n2);

            break; 

 // operator doesn't match any case constant +, -, *, / ,% 

default: printf("Error! operator is not correct"); 

} 

getch();

 }