Calculator in C language

 

#include <stdio.h>

int main()

{

float num1 , num2 , result ;

int input;

printf("enter your first number : ");

scanf("%f" , &num1);

printf("enter your second number : ");

scanf("%f" , &num2);

printf("which operation do you want\n1.+\n2.-\n3.×\n4.÷\n ••••> ");

scanf("%d" , &input);

if (input == 1) {

  result = num1+num2;

  printf("output = %f" , result); }

else if (input == 2) {

  result = num1-num2;

  printf("output = %f" , result); }

else if (input == 3) {

  result = num1*num2;

  printf("output = %f" , result); }

else if (input == 4) {

  result = num1/num2 ;

  printf("output = %f" , result); }

else {

  printf("you entered wrong option try again !!"); }

  return 0;

}