Compilare: user.cpp: In function ‘int back(int, int, int)’: user.cpp:52: warning: name lookup of ‘r’ changed user.cpp:28: warning: matches this ‘r’ under ISO standard rules user.cpp:47: warning: matches this ‘r’ under old rules user.cpp:34: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:73: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:78: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int back(int, int, int)’: user.cpp:68: warning: control reaches end of non-void function user.cpp: In function ‘int niveluri(int)’: user.cpp:25: warning: control reaches end of non-void function user.cpp: In function ‘int back(int, int, int)’: user.cpp:28: warning: ‘copie_i’ may be used uninitialized in this function user.cpp:28: warning: ‘copie_j’ may be used uninitialized in this function