How to make a Calculator in C Programming Language ?
Solution:
//Design a calculator.
#include<stdio.h>
#include<conio.h>
void main()
{
double number_1, number_2;
char operation;
clrscr();
printf("Enter an expression: ");
scanf("%lf%c%lf", &number_1, &operation, &number_2);
switch(operation) {
case '+':
printf("%lf", number_1 + number_2);
break;
case '-':
printf("%lf", number_1 - number_2);
break;
case '*':
printf("%lf", number_1 * number_2);
break;
case '/':
printf("%lf", number_1 / number_2);
break;
default:
printf("Invalid operation.");
}
getch();
}