Little Endian to Big Endian

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

uint32_t convert_endian(uint32_t value) {

    return ((0xFF000000 & value) >> 24) |

        ((0x00FF0000 & value) >> 8) |

        ((0x0000FF00 & value) << 8) |

        ((0x000000FF & value) << 24);
}

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