Compilare: user.cpp: In function ‘void citire()’: user.cpp:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int matr()’: user.cpp:40: warning: unused variable ‘j’ user.cpp: In function ‘int estedeja(int, int)’: user.cpp:97: warning: unused variable ‘ok’ user.cpp: In function ‘int matj(int)’: user.cpp:104: warning: unused variable ‘j’ user.cpp: In function ‘int main()’: user.cpp:172: warning: unused variable ‘i’ user.cpp:173: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:174: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int matj(int)’: user.cpp:140: warning: control reaches end of non-void function