Write a Program to Implement Calculator with Following Operations Using Switch Case 1. Add Two Numbers 2. Subtract Two Numbers - Structured Programming Approach

Write a program to implement calculator with following operations using switch case
2. subtract two numbers
3. multiply two numbers
4. divide two numbers

Solution

#include <stdio.h>
#include<conio.h>
void main()
{
int num1,num2;
float result;
char ch;
clrscr();
printf("Enter first number: ");
scanf("%d",&num1);
printf("Enter second number: ");
scanf("%d",&num2);
printf("Choose operation to perform (+,-,*,/): ");
scanf(" %c",&ch);
result=0;
switch(ch)
{
case '+':
result=num1+num2;
break;
case '-':
result=num1-num2;
break;
case '*':
result=num1*num2;
break;
case '/':
result=(float)num1/(float)num2;
break;
default:
printf("Invalid operation.\n");
}
printf("Result: %d %c %d = %f\n",num1,ch,num2,result);
getch();
}

 Output: Enter first number: 10Enter second number: 3Choose operation to perform (+,-,*,/,%): /Result: 10 / 3 = 3.333333
Concept: Control Structures
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