Eroare de compilare: user.c:1:18: error: cstdio: No such file or directory user.c:2:19: error: cstring: No such file or directory user.c:3:19: error: cstdlib: No such file or directory user.c:4: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘namespace’ user.c:5: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token user.c: In function ‘main’: user.c:10: error: ‘f1’ undeclared (first use in this function) user.c:10: error: (Each undeclared identifier is reported only once user.c:10: error: for each function it appears in.) user.c:10: warning: implicit declaration of function ‘freopen’ user.c:10: error: ‘stdin’ undeclared (first use in this function) user.c:11: warning: implicit declaration of function ‘fgetc’ user.c:48: warning: implicit declaration of function ‘fclose’ user.c:49: error: ‘f2’ undeclared (first use in this function) user.c:49: error: ‘stdout’ undeclared (first use in this function) user.c:52: warning: implicit declaration of function ‘printf’ user.c:52: warning: incompatible implicit declaration of built-in function ‘printf’ user.c:56: warning: incompatible implicit declaration of built-in function ‘printf’