Little Endian to Big Endian

Code

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

uint32_t convert_endian(uint32_t value) {
    uint32_t result = 0;

    for(int i  = 0; i < 32; i += 8) {
        uint8_t byte = (value >> i) & 0xFF;
        result = (result << 8) | byte;
    }

    return result;
}

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

Solving Approach