Detecting memory leaks in Visual Studio

main.c

#define _CRTDBG_MAP_ALLOC
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <crtdbg.h>

int main(int argc, char* argv[]) {
    _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
    int* offset_x = malloc(sizeof(int));
    int* offset_y = malloc(sizeof(int));
    
    if (offset_x == NULL || offset_y == NULL) {
        return 1;
    }
    
    *offset_x = 10;
    *offset_y = 20;
    
    // ... more processing
    
    // free(offset_x);
    // free(offset_y);
    _CrtDumpMemoryLeaks();
    
    return 0;
}