View Compilation Error

0_0_17321353_15503.cpp:7:1: error: expected primary-expression before 'int'
 int n1,n2,n3;
 ^
0_0_17321353_15503.cpp:7:1: error: expected '}' before 'int'
0_0_17321353_15503.cpp:7:1: error: expected ',' or ';' before 'int'
0_0_17321353_15503.cpp:8:1: error: 'cout' does not name a type
 cout<<"Plaese input two integer numbers:"
 ^
0_0_17321353_15503.cpp:10:1: error: 'cout' does not name a type
 cout<<"The result is:"<<endl;
 ^
0_0_17321353_15503.cpp:11:1: error: 'n3' does not name a type
 n3=n1+n2;
 ^
0_0_17321353_15503.cpp:12:1: error: 'cout' does not name a type
 cout<<n3<<endl;
 ^
0_0_17321353_15503.cpp:13:1: error: expected unqualified-id before 'return'
 return o;
 ^
0_0_17321353_15503.cpp:14:1: error: expected declaration before '}' token
 }
 ^