View Compilation Error

0_0_19588963_13615.cpp: In function 'int main()':
0_0_19588963_13615.cpp:17:5: error: 'i' was not declared in this scope
 for(i=0;i<n;i++)        
     ^
0_0_19588963_13615.cpp:26:5: error: 'i' was not declared in this scope
 for(i=0;i<n;i++) 
     ^