cyberland.cpp: In function 'int main()':
cyberland.cpp:9:5: error: 'i' was not declared in this scope
9 | for(i=1 ; i<=n , i++){
| ^
cyberland.cpp:9:14: error: 'n' was not declared in this scope; did you mean 'yn'?
9 | for(i=1 ; i<=n , i++){
| ^
| yn
cyberland.cpp:9:21: error: expected ';' before ')' token
9 | for(i=1 ; i<=n , i++){
| ^
| ;
cyberland.cpp:11:8: error: expected initializer before '+=' token
11 | int ans+=i;
| ^~
cyberland.cpp:14:5: warning: unused variable 'ans' [-Wunused-variable]
14 | int ans=-1;
| ^~~
cyberland.cpp:7:5: warning: unused variable 'ans' [-Wunused-variable]
7 | int ans=0;
| ^~~
cyberland.cpp:16:1: error: expected '}' at end of input
16 | }
| ^
cyberland.cpp:4:11: note: to match this '{'
4 | int main(){
| ^