View Compilation Error

0_0_30332795_6038.cpp: In function 'int main()':
0_0_30332795_6038.cpp:37:14: error: 'i' was not declared in this scope
         fper(i,n,1){
              ^
0_0_30332795_6038.cpp:37:19: error: 'fper' was not declared in this scope
         fper(i,n,1){
                   ^