Compilare: user.cpp: In function ‘int main()’: user.cpp:7:37: warning: unused variable ‘wh2’ [-Wunused-variable] int i,j,v,n,cmm1=0,cmm2,l,wh1=1,wh2=1,mat[50][50]={0},mat2[50][50]={0},mat3[50][50]={1},sec=0,pi=0,afara=0; ^ user.cpp:7:76: warning: variable ‘mat3’ set but not used [-Wunused-but-set-variable] int i,j,v,n,cmm1=0,cmm2,l,wh1=1,wh2=1,mat[50][50]={0},mat2[50][50]={0},mat3[50][50]={1},sec=0,pi=0,afara=0; ^ user.cpp:7:99: warning: unused variable ‘pi’ [-Wunused-variable] int i,j,v,n,cmm1=0,cmm2,l,wh1=1,wh2=1,mat[50][50]={0},mat2[50][50]={0},mat3[50][50]={1},sec=0,pi=0,afara=0; ^ user.cpp:7:104: warning: unused variable ‘afara’ [-Wunused-variable] int i,j,v,n,cmm1=0,cmm2,l,wh1=1,wh2=1,mat[50][50]={0},mat2[50][50]={0},mat3[50][50]={1},sec=0,pi=0,afara=0; ^ user.cpp:29:11: warning: ‘l’ may be used uninitialized in this function [-Wmaybe-uninitialized] g << l; ^