Eroare de compilare: user.cpp:5: error: conflicting declaration ‘int a’ user.cpp:4: error: ‘a’ has a previous declaration as ‘long long unsigned int a [3][3]’ user.cpp:5: error: conflicting declaration ‘int b’ user.cpp:4: error: ‘b’ has a previous declaration as ‘long long unsigned int b [3][3]’ user.cpp: In function ‘int main()’: user.cpp:26: warning: format ‘%d’ expects type ‘int*’, but argument 5 has type ‘long long unsigned int (*)[3][3]’ user.cpp:26: warning: format ‘%d’ expects type ‘int*’, but argument 6 has type ‘long long unsigned int (*)[3][3]’ user.cpp:29: error: invalid conversion from ‘long long unsigned int (*)[3]’ to ‘long long unsigned int’ user.cpp:29: error: invalid conversion from ‘long long unsigned int (*)[3]’ to ‘long long unsigned int’ user.cpp:33: error: ‘mul’ was not declared in this scope user.cpp:33: error: ‘copy’ was not declared in this scope user.cpp:35: error: ‘mul’ was not declared in this scope user.cpp:35: error: ‘copy’ was not declared in this scope user.cpp:36: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long long unsigned int’ user.cpp:22: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:23: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result