We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  1. Prepare
  2. C
  3. Functions
  4. Variadic functions in C
  5. Discussions

Variadic functions in C

  • michaelchen0611
     + 0 comments
    int sum (int count,...) {
    // initialize 
    //  1. va_list args;
    //  2. va_start(args, count);   pass in the number of the arguments.
    va_list args;
    va_start(args, count);
    int res = 0;
    for (int i = 0; i<count; i++){
        res += va_arg(args, int);
    }
    va_end(args);
    return res;
}

int min(int count,...) {
    va_list args;
    va_start(args, count);
    int min_int = va_arg(args, int);
    for (int i = 1; i<count; i++){
        int temp = va_arg(args, int);
        if (temp < min_int){
            min_int = temp;
        }
    }
    va_end(args);
    return min_int;
}

int max(int count,...) {
    va_list args;
    va_start(args, count);
    int max_int = va_arg(args, int);
    for (int i = 1; i<count; i++){
        int temp = va_arg(args, int);
        if (temp > max_int){
            max_int = temp;
        }
    }
    va_end(args);
    return max_int;
}