SDL_GetDaysInMonth - Man Page

#include <SDL3/SDL_time.h>

int SDL_GetDaysInMonth(int year, int month);

year

the year.

month

the month [1-12].

Returns the number of days in the requested month or -1 on failure; call SDL_GetError() for more information.

It is safe to call this function from any thread.

This function is available since SDL 3.2.0.