Compilare: user.cpp: In function ‘int main()’: user.cpp:110:19: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(mat[i][j]!=cu) ^ user.cpp:107:37: warning: ‘c2’ may be used uninitialized in this function [-Wmaybe-uninitialized] cu=mat[l2][c2];bnr=a[l2][c2]; ^ user.cpp:107:37: warning: ‘l2’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:116:15: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<l<<" "<<c<<'\n'<<cu; ^ user.cpp:116:7: warning: ‘l’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<l<<" "<<c<<'\n'<<cu; ^ user.cpp:89:10: warning: ‘cu’ may be used uninitialized in this function [-Wmaybe-uninitialized] char cu; ^