Question

#include <iostream>
using namespace std;

int main (void) {
 cout << " 1\t2\t3\t4\t5\t6\t7\t8\t9" << endl << "" << endl;
 for (int c = 1; c < 10; c++) {
   cout << c << "| ";
   for (int i = 1; i < 10; i++) {
     cout << i * c << '\t';
   }
   cout << endl;
 }
 return 0;
}

Hey so this code produces a times table…I found it on Google Code’s C++ class online…I’m confused about why “i” in the second for loop resets to 1 every time you go through that loop…or is it being declared again in the first parameter?

Thanks in advance!

Answer 1

It “reverts” to 1 because you explicitly set it to 1 as the start condition of the loop…

The “i” name does not exist outside this loop, so each time this loop is run (for each iteration of ‘c’), then “i” is a new variable, set to a start of 1.