This code is not running properly on my system (vs code) for 1 and 5 number but running just fine on other system/online compilers

Question

Code

#include<stdio.h>
#include<math.h.>

int main(){
    int num = 0 ;
    long checkNum = 0;
    int digit;
    int digitInNum ;
    printf("Enter the number of digits in your number:");
    scanf("%d",&digitInNum);
    for(int i=0 ; i< digitInNum ; i++){
        printf("Enter %d digit of your number:",i+1);
        scanf("%d",&digit);
        checkNum = checkNum + pow(digit,digitInNum);
        printf("%d this is the checkNum after each iteration \n",checkNum);
        num = num * 10 + digit;
    }
    printf("Your number is: %d\n",num);
    

    if((checkNum) == num){
        printf("It is amstrong number.");
    }else{
        printf("Not a amstrong number.");
    }

}

Output

Enter the number of digits in your number:3
Enter 1 digit of your number:1
1 this is the checkNum after each iteration 
Enter 2 digit of your number:5
125 this is the checkNum after each iteration 
Enter 3 digit of your number:3
152 this is the checkNum after each iteration 
Your number is: 153
Not a amstrong number.

I tried with other amstrong numbers like 370, 371 it works fine but for 153 and for any other number having 1 and 5 in it the last sum is less than what is intended. I tried to run this on my friend's system (vs code only) and also on online compiler it works fine even for 153 (number having 1 and 5) pls help me. Is there a problem with my system (or with extensions in vs code)?

These are the extensions I have installed currently