[C Programming #2] Calculate power of a number without using pow() pre-defined function

Calculate power of a number without using pow() pre-defined function

This question is also asked in interviews frequently.

Please check below program:

1. #include<stdio.h>
2. 
   
3. int main()
4. {
5.   int n, power;
6.   int i, j;
7.   int total = 0, sum;
8.  
9. printf("Please enter Value and its power\n");
10. scanf("%d%d", &n, &power);
11.  
12. printf("Calculate: %d^%d:\n", n, power);
13.  
14. total = n;
15. for (i=1; i<power; i++) {
16. sum = total;
17. for (j=1; j<n; j++) {
18. total += sum;
19. }
20. }
21. printf("Result: %d\n", total);
22. 
    
23. 
    
24. return 0;
25. }

Output:

Please enter Value and its power

10

3

Calculate: 10^3:

Result: 1000