#include <stdio.h>

main(int argv, char *argc[]){

int num1, num2;
char oper;

if(argv < 4)	{
	printf("\nWRONG!!!\n%s num1 oper num2", argc[0]);
	return(-1);
		}

num1 = atoi(argc[1]);
num2 = atoi(argc[3]);
oper = *argc[2];

switch(oper){
	case '+': printf("\n %d\n", num1 + num2); break;
	case '-': printf("\n %d\n", num1 - num2); break;
	case '*': printf("\n %d\n", num1 * num2); break;
	case '/': printf("\n %d\n", num1 / num2); break;
	default: printf("\n %c nao e operador",oper); break;
		}
return 0;
}