please do like a calculator
int calculate(int a, int b, int c){ int x; int result; if (c = 1) { result = a + b; return result; } else if (c = 2) { result = a - b; return result; } else if (c = 3) { result = a * b; return result; } else if (c = 4) { result = a / b; return result; } else { return 0; } }