Extract and Modify Field in a 32-bit Register

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

uint32_t update_register(uint32_t reg) {
    uint8_t val = 0;
    uint16_t mask = (((1<<5)- 1)<<10);
    val = (mask & reg)>>10;
    if(val<31)
        val++;
    reg &= ~mask; 
    reg |= (val & 0x1f)<<10;
    // Your logic here
    return reg;
}

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