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  1. #include <stdio.h>
  2.  
  3. /* Function prototypes */
  4. long int calculate_power (int number, int power);
  5.  
  6. /******************************************************/
  7. /* Function: calculate_power                          */
  8. /*                                                    */
  9. /* Overview: Raises an integer to a positive integer  */
  10. /*           power.                                   */
  11. /*                                                    */
  12. /* Parameters:  number - a integer                    */
  13. /*              power  - a positive power to raise    */
  14. /*                                                    */
  15. /* Written by:  Timothy Niesen                        */
  16. /*                                                    */
  17. /* Date Written: 10/22/91                             */
  18. /******************************************************/
  19.  
  20. long int calculate_power (int number, int power)
  21. {
  22.     long int result = 1;   /* the result of number raised to power */
  23.  
  24.     /* anything to the zero power is 1 */
  25.     if (power == 0)
  26.         return(result);
  27.  
  28.     else
  29.     {
  30.         /* Here is the recursive call ... function calling itself */
  31.         result =  number * calculate_power(number, power - 1);
  32.     } /* else */
  33.  
  34.     return (result); /* to calling function */
  35.  
  36. } /* calculate_power */
  37.  
  38. int main (void)
  39. {
  40.  
  41.     /* Call this function with 4 different arguments */
  42.  
  43.     printf("Passed with 5,0 is %li\n", calculate_power(5,0));
  44.     printf("Passed with 5,1 is %li\n", calculate_power(5,1));
  45.     printf("Passed with 5,2 is %li\n", calculate_power(5,2));
  46.     printf("Passed with 5,3 is %li\n", calculate_power(5,3));
  47.  
  48.     return(0);
  49.  
  50. } /* main */
  51.  
Success #stdin #stdout 0s 5244KB
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stdin
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Standard input is empty
stdout
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Passed with 5,0 is 1
Passed with 5,1 is 5
Passed with 5,2 is 25
Passed with 5,3 is 125
https://ideone.com/rYtCmU
language:
C (gcc 8.3)
created:
7 hours ago
visibility:
public

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