Building A Better Calculator

Copyint num1, num2;
char op;

printf(("Enter num1: ");
scanf("%d", &num1);

printf(("Enter Operator: ");
scanf("%c", &op);

printf(("Enter num2: ");
scanf("%d", &num2);

if(op == '+'){
     printf("%d", num1 + num2);
} else if(op == '-'){
     printf("%d", num1 - num2);
} else if(op == '/'){
     printf("%d", num1 / num2);
} else if(op == '*'){
     printf("%d", num1 * num2);
} else {
     printf("Invalid Operator");
}

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