Function Example

     #include <stdio.h>
     
     /* function prototype */
     int power ( int num, int exp );
     
     /*
      * Main procedure
      */
     int main ( void ) {
       int i = 2,
           j = 5;
     
       printf ( "%d^%d = %d\n", i, j, power ( i, j ) );
       return ( 0 );
     }
     
     
     /*
      * Function to return num^exp
      */
     int power ( int num, int exp ) {
       int i,
           result = 1;
     
       for ( i = 1; i <= exp; ++i )
         result *= num;
     
       return ( result );
     }
     

2^5 = 32