0_0_33588228_11183.cpp: In function 'int main()': 0_0_33588228_11183.cpp:7:2: error: expected ';' before 'for' for(int i=2;i<=20;i++){ ^ 0_0_33588228_11183.cpp:7:14: error: 'i' was not declared in this scope for(int i=2;i<=20;i++){ ^