Eroare de compilare: user.cpp: In function ‘void df(int)’: user.cpp:14: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:44: error: ‘memset’ was not declared in this scope user.cpp:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result