Extract and Modify Field in a 32-bit Register

Viet dz E9

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

uint32_t update_register(uint32_t reg) {
    uint32_t mask;
    uint32_t f;
    mask = (0x1F << 10);
    f= (reg & mask) >> 10;
    if(f<31) f=f+1;

    reg=reg & ~(mask);
    reg=reg | (f << 10);

    return reg;
}

int main() {
    uint32_t reg;
    scanf("%u", &reg);
    uint32_t updated = update_register(reg);
    printf("%u", updated);
    return 0;
}

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