for-rounak-raj.c

#include <stdio.h>

void main(){
	float x,y;
	char ch, escape;
	printf("Enter x & y\n");
	scanf("%f %f", &x, &y);
	/*
	  Automatically a new line character input is made by the c-program itself. 
	  To prevent the unexpected input messing our program, we placed the 
	  escape char variable to hold that unexpected value.

	    [ NB: There are several way you can handle this problem. ]
	*/
	scanf("%c", &escape);

	printf("Which operation you want to perform? [+, -, / or *]\n");
	scanf("%c", &ch);
	switch(ch){
		case '+':
			printf("%.2f + %.2f = %.2f\n", x, y, x+y);
			break;
		case '-':
                	printf("%.2f - %.2f = %.2f\n", x, y, x-y);
               		break;
		case '*':
                	printf("%.2f x %.2f = %.2f\n", x, y, x*y);
                	break;
		case '/':
                	printf("%.2f / %.2f = %.2f\n", x, y, x/y);
           		break;
		default:
			printf("Invalid operation\n");
			break;
	}
}