Machine Problem in C++

Write a program that will ask the user to input a character “m” or “f” and  then it will display “Hello Sir. You are a Male ”  if the input is “f” otherwise “Hello Madam. You are a Female”. Use if-else statement.

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Program Listing

// gender.cpp
// Prof. Jake Rodriguez Pomperada, MAED-IT, MIT
// Bacolod City, Negros Occidental
// June 24, 2021  Thursday  9:41 PM

#include <iostream>

int main(int argc, char **argv)
    char gender;
    std::cout <<"\tGender Checker in Modern C++";
    std::cout <<"\n\n";
    std::cout << "Enter the gender(m or f): ";
    std::cin >> gender;
    std::cout <<"\n\n";
    if (gender == 'm' || gender == 'M')
        std::cout << "Hello Sir. You are a Male.\n";
    else if (gender == 'f' || gender == 'F')
        std::cout << "Hello Madam. You are a Female.";
        std::cout << "Invalid input.\n";