0_0_26324228_13634.cpp: In function 'int main()': 0_0_26324228_13634.cpp:9:7: error: 'i' was not declared in this scope for(i=3;i<=n;i++) ^ 0_0_26324228_13634.cpp:15:3: error: 'i' was not declared in this scope i-=2; ^