Main.cc: In function 'int main()':
Main.cc:8:5: error: expected ';' before 'for'
for(i=n;i<=m;i++)
^
Main.cc:8:14: warning: statement has no effect [-Wunused-value]
for(i=n;i<=m;i++)
^
Main.cc:8:21: error: expected ';' before ')' token
for(i=n;i<=m;i++)
^