Compilare: user.cpp: In function ‘void citmat()’: user.cpp:24: warning: format ‘%c’ expects type ‘char*’, but argument 2 has type ‘int*’ user.cpp:27: warning: format ‘%c’ expects type ‘char*’, but argument 2 has type ‘int*’ user.cpp:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:37: warning: unused variable ‘i’ user.cpp:37: warning: unused variable ‘j’ user.cpp:37: warning: unused variable ‘c’ user.cpp:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void citmat()’: user.cpp:25: warning: ‘n’ is used uninitialized in this function