114. Little Endian to Big Endian

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

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

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