Answer by Alex Lop. for How to check function return value in an if statement without calling it

You can save the return value in a local variable and use it all the way:

int check_rc_val = check_length(chars);if (check_rc_val == X){    return check_rc_val;}int check_rc_val = check_rc(chars);if (check_rc_val == Y){    return check_rc_val;}int check_alpha_val = check_alpha(chars);if (check_alpha_val == Z){    return check_alpha_val;}