114. Little Endian to Big Endian

#include <stdio.h>
#include <stdint.h>

uint32_t convert_endian(uint32_t value) {
    uint32_t reg = value;
    reg = (((reg >> 24) & 0x000000FF) |
    ((reg >> 8) & 0x0000FF00) |
    ((reg << 8) & 0x00FF0000) |
    ((reg << 24) & 0xFF000000));
    return reg;
}

int main() {
    uint32_t val;
    scanf("%u", &val);
    printf("%u", convert_endian(val));
    return 0;
}