Extract and Modify Field in a 32-bit Register

Mask those bits and then or back

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

uint32_t update_register(uint32_t reg) {
    // Your logic here
    // uint16_t mask = 0x1f << 10;
    uint16_t bits = (reg >> 10) & 0b11111;
    if(bits < 31) bits++;
    reg &= ~(0b11111 << 10);
    reg |=  (bits << 10);
    return reg;
}

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

Solving Approach