RGB32 to RGB888

solution.c

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

#define getR(value) ((value & 0x0000FF00) >> 8)
#define getG(value) ((value & 0x00FF0000) >> 16)
#define getB(value) ((value & 0xFF000000) >> 24)

int main() {
    
    int testcases = 0;
    scanf("%d", &testcases);
    int width = 0, height = 0;
    scanf("%d %d", &width, &height);
    for(int i = 0; i < testcases; i++)
    {
        for(int j = 0; j < height; j++)
        {
            for(int k = 0; k < width; k++)
            {
                unsigned pixel = 0;
                scanf("%u", &pixel);
                printf("%u %u %u ", getR(pixel), getG(pixel), getB(pixel));
            }
            printf("\n");
        }
    }
    
    return 0;
}