C program to create Calculator using Switch Case

#include<stdio.h>
int main()
{
	float num1, num2, sum, sub, mul, div;
	char opretor;

	/* Print welcome message */
    printf("SIMPLE CALCULATOR\n");
    printf("----------------------------\n");
    printf("Enter [number 1] [+ - * /] [number 2]\n");

    scanf("%f %c %f",&num1, &opretor, &num2);

	/* perform action based on operator*/
	switch(opretor)
	{
		case '+' : sum = num1 + num2;
				   printf("%.2f %c %.2f = %.2f", num1, opretor, num2, sum);
				   break;

		case '-' : sub = num1 - num2;
				   printf("%.2f %c %.2f = %.2f", num1, opretor, num2, sub);
				   break;

		case '*' : mul = num1 * num2;
				   printf("%.2f %c %.2f = %.2f", num1, opretor, num2, mul);
				   break;

		case '/' : div = num1 / num2;
				   printf("%.2f %c %.2f = %.2f", num1, opretor, num2, div);
				   break;

		default : printf("Invalid Operator");
	}

	return 0;
}

Output

SIMPLE CALCULATOR
----------------------------
Enter [number 1] [+ - * /] [number 2]
7 * 17
7.00 * 17.00 = 119.00