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Little Endian to Big Endian

Code

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

uint32_t convert_endian(uint32_t value) {
    return ((value >> 24) & 0x000000FF) |   // byte 3 → byte 0
           ((value >> 8)  & 0x0000FF00) |   // byte 2 → byte 1
           ((value << 8)  & 0x00FF0000) |   // byte 1 → byte 2
           ((value << 24) & 0xFF000000);    // byte 0 → byte 3
}


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

Solving Approach


 

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Input

305419896

Expected Output

2018915346