21. Replace Bit Field in a 32-bit Register

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

uint32_t replace_field(uint32_t reg, uint32_t val, uint8_t pos, uint8_t len) {
    // Your code here
   uint32_t temp = 0;

for(int i=pos; i<(pos+len); i++)
{
    temp = temp | (1<<i);
    
}

reg = reg & ~(temp);

uint32_t temp2 = val<<pos;

reg = reg|temp2;
    
    
    
    
    return reg;
}

int main() {
    uint32_t reg, val;
    uint8_t pos, len;
    scanf("%u %u %hhu %hhu", &reg, &val, &pos, &len);
    printf("%u", replace_field(reg, val, pos, len));
    return 0;
}