Main.cc: In function 'int main()':
Main.cc:12:17: error: found ':' in nested-name-specifier, expected '::'
for(i=1;i<=n:i++)
^
Main.cc:12:16: error: 'n' is not a class, namespace, or enumeration
for(i=1;i<=n:i++)
^
Main.cc:12:21: error: expected ';' before ')' token
for(i=1;i<=n:i++)
^