cern.cpp:3:22: error: fstream.h: No such file or directory cern.cpp:4: error: 'ifstream' does not name a type cern.cpp:5: error: 'ofstream' does not name a type cern.cpp: In function 'int main()': cern.cpp:10: error: 'fi' was not declared in this scope cern.cpp:14: error: 'fo' was not declared in this scope cern.cpp:15: error: 'fo' was not declared in this scope cern.cpp:17: error: 'fo' was not declared in this scope cern.cpp:18: error: 'fo' was not declared in this scope cern.cpp:20: error: 'fo' was not declared in this scope cern.cpp:21: error: 'fo' was not declared in this scope cern.cpp:23: error: 'fo' was not declared in this scope cern.cpp:24: error: 'fo' was not declared in this scope cern.cpp:26: error: 'fo' was not declared in this scope cern.cpp:27: error: 'fo' was not declared in this scope cern.cpp:30: error: 'fo' was not declared in this scope cern.cpp:31: error: 'fo' was not declared in this scope cern.cpp:40: error: 'fo' was not declared in this scope cern.cpp:41: error: 'fo' was not declared in this scope cern.cpp:42: error: 'fo' was not declared in this scope cern.cpp:43: error: 'fo' was not declared in this scope cern.cpp:47: error: 'fo' was not declared in this scope cern.cpp:48: error: 'fo' was not declared in this scope cern.cpp:49: error: 'fo' was not declared in this scope cern.cpp:50: error: 'fo' was not declared in this scope cern.cpp:54: error: 'fo' was not declared in this scope cern.cpp:55: error: 'fo' was not declared in this scope cern.cpp:56: error: 'fo' was not declared in this scope cern.cpp:57: error: 'fo' was not declared in this scope cern.cpp:64: error: 'fo' was not declared in this scope