114. Little Endian to Big Endian

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

uint32_t convert_endian(uint32_t value) {
    uint8_t *tmp = (uint8_t *)&value;
    uint8_t c = tmp[0];
    tmp[0] = tmp[3];
    tmp[3] = c;
    c = tmp[2];
    tmp[2] = tmp[1];
    tmp[1] = c;

    return value;
    //return (value << 24 | value >> 24 | ((value & 0xFF00) << 4) | ((value & 0xFF0000) >> 4));
}

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