Compiler output
prog.cpp: In function 'int b1(char*)':
prog.cpp:5:25: error: 'strlen' was not declared in this scope
prog.cpp: In function 'int c(char*)':
prog.cpp:12:25: error: 'strlen' was not declared in this scope
prog.cpp: In function 'int e(char*)':
prog.cpp:27:18: error: 'strlen' was not declared in this scope
prog.cpp:28:21: error: 'strchr' was not declared in this scope
prog.cpp:30:20: error: 'strcpy' was not declared in this scope
prog.cpp:35:16: error: cast from 'char*' to 'int' loses precision [-fpermissive]
prog.cpp:37:13: error: cast from 'char*' to 'int' loses precision [-fpermissive]
prog.cpp: In function 'int main()':
prog.cpp:50:20: error: 'strchr' was not declared in this scope
prog.cpp:43:8: warning: unused variable 'ok' [-Wunused-variable]
prog.cpp:44:17: warning: unused variable 'b' [-Wunused-variable]
