4

Sum of the elements of a table

  1. #include <stdio.h>
  2.  
  3. double sum( const float tab[], const unsigned siz ) {
  4.     double sum; /* same name! */
  5.     int i;
  6.  
  7.     for ( sum = 0.0, i = 0; i < siz; i++ )
  8.         sum += tab[ i ];
  9.     return sum;
  10. }
  11.  
  12. main() {
  13.     float f[] = { 1.0, 1.0/10, 1.0/100, 1.0/1000, 1.0/10000, 1.0/100000, 1.0/1000000 };
  14.  
  15.     printf( "sum=%f\n", sum( f, sizeof(f)/sizeof(float)) );
  16. }

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