Little Endian to Big Endian

Code

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

uint32_t convert_endian(uint32_t value) {
    value = ((value & 0x0000FFFF) << 16) | ((value & 0xFFFF0000) >> 16);
    value = ((value & 0x00FF00FF) << 8) | ((value & 0xFF00FF00) >> 8);
    
    return value;
}

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

Solving Approach