View Compilation Error

0_0_20501184_24926.cpp: In function 'void print()':
0_0_20501184_24926.cpp:57:5: error: 'cout' was not declared in this scope
     cout<<"The matrix -->"<<endl;
     ^
0_0_20501184_24926.cpp:57:29: error: 'endl' was not declared in this scope
     cout<<"The matrix -->"<<endl;
                             ^