foo.cpp:4:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
foo.cpp: In function 'int main()':
foo.cpp:15:51: error: 'printf' was not declared in this scope
foo.cpp:16:56: error: 'printf' was not declared in this scope
foo.cpp:44:29: error: 'sort' was not declared in this scope
foo.cpp:49:38: error: 'printf' was not declared in this scope
foo.cpp:70:31: error: 'sort' was not declared in this scope
foo.cpp:71:36: error: 'printf' was not declared in this scope
foo.cpp:114:29: error: 'sort' was not declared in this scope
foo.cpp:119:38: error: 'printf' was not declared in this scope
foo.cpp:160:29: error: 'sort' was not declared in this scope
foo.cpp:165:38: error: 'printf' was not declared in this scope
foo.cpp:172:36: error: 'printf' was not declared in this scope
foo.cpp:220:25: error: 'sort' was not declared in this scope
foo.cpp:225:38: error: 'printf' was not declared in this scope