Little Endian to Big Endian

Code

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

uint32_t convert_endian(uint32_t value) {
    // Write logic to swap bytes
    
    union 
    {
        uint8_t byte[4];
        uint32_t res;
    }Big;

    for(int i=0; i<4; i++)
    {
        Big.byte[3-i] = *(((uint8_t*)(&value))+i);
    }
    return Big.res;
}

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

Solving Approach