Question

How many times ‘x’ value will be tested in the following code snippet ?

int x;
for(x=0;x < 10; x++)
   printf("%d",x);

To me it seems that the answer is 11 but my module says it is 10 ?! what am I missing?

Answer 1

Eleven, as the condition is tested at the beginning of each loop iteration, before printf is called:

0 < 10 == true
1 < 10 == true
2 < 10 == true
3 < 10 == true
4 < 10 == true
5 < 10 == true
6 < 10 == true
7 < 10 == true
8 < 10 == true
9 < 10 == true
10 < 10 == false    // exit from loop (printf not executed)