#include <stdio.h> int main(int argv, char **argc) { double i; double sum = 0; // Line 7 for(i=1; i<50000000;) // Line 9 { sum = sum + 4.0 / i; i += 2; // Line 11 sum = sum - 4.0 / i; i += 2; // Line 12 } printf("After %d iterations sum = %.8f\n", (int)(i-1)/2, sum); // Line 15 return 0; }