Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp:2:21: error: iostream.h: No such file or directory user.cpp:4: error: ‘ifstream’ does not name a type user.cpp:5: error: ‘ofstream’ does not name a type user.cpp: In function ‘int triunghicu1(int)’: user.cpp:22: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:40: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘void afis()’: user.cpp:65: error: ‘fout’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:72: error: ‘fin’ was not declared in this scope user.cpp:85: error: ‘abs’ was not declared in this scope