#include <stdio.h> int main() { double num1, num2; char operation; printf("Enter two numbers: "); scanf("%lf %lf", &num1, &num2); printf("Enter an operation (+, -, *, /): "); scanf(" %c", &operation); switch (operation) { case '+': printf("%.2lf + %.2lf = %.2lf\n", num1, num2, num1 + num2); break; case '-': printf("%.2lf - %.2lf = %.2lf\n", num1, num2, num1 - num2); break; case '*': printf("%.2lf * %.2lf = %.2lf\n", num1, num2, num1 * num2); break; case '/': if(num2 != 0.0) printf("%.2lf / %.2lf = %.2lf\n", num1, num2, num1 / num2); else printf("Division by zero!\n"); break; default: printf("Invalid operation!\n"); } return 0; }#include<stdio.h> #include<conio.h> void main() { char choice; int a,b,res=0; clrscr(); printf("Enter First value: "); scanf("%d",&a); printf("\n Enter Operator: "); choice=getch(); printf("\n Enter Second value: "); scanf("%d",&b); switch(choice) { case '+': res=a+b; printf("Sum: %d",res); break; case '-': res=a-b; printf("Difference: %d",res); break; case '*': res=a*b; printf("Product: %d",res); break; case '/': res=a/b; printf("Quotient: %d",res); break; default: printf("Enter Valid Operator!!"); } getch(); }