Compilare: user.cpp: In function ‘void bordare()’: user.cpp:11:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘void co()’: user.cpp:93:35: warning: ‘j1’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<a[i1][j1]<<" "<<i1<<" "<<j1; ^ user.cpp:93:24: warning: ‘i1’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<a[i1][j1]<<" "<<i1<<" "<<j1; ^ user.cpp: In function ‘int main()’: user.cpp:140:35: warning: ‘j2’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<i1<<" "<<j1<<" "<<i2<<" "<<j2<<'\n'; ^ user.cpp:143:12: warning: ‘j1’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[1]=j1; ^ user.cpp:140:26: warning: ‘i2’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<i1<<" "<<j1<<" "<<i2<<" "<<j2<<'\n'; ^ user.cpp:142:12: warning: ‘i1’ may be used uninitialized in this function [-Wmaybe-uninitialized] c[1]=i1; ^