Little Endian to Big Endian

Code

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

typedef union
{
    uint32_t value;
    uint8_t value_1[4];

}byte_expand;


uint32_t convert_endian(uint32_t value) {
    byte_expand var1 = {0};
    var1.value = value;
    uint8_t n = 4;
    for(uint8_t i = 0; i<n/2 ; i++)
    {
         uint8_t temp = var1.value_1[i];
         var1.value_1[i] = var1.value_1[n-i-1];
         var1.value_1[n-i-1] = temp;
         
    }
    return var1.value;
}

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

Solving Approach