Compilare: user.cpp: In function ‘int main()’: user.cpp:24:18: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(x[i]>='A'&&x[i]<='Z'||x[i]>='a'&&x[i]<='z') ^ user.cpp:30:25: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(x[i]>='A'&&x[i]<='Z'||x[i]>='a'&&x[i]<='z') m0[m0[0].nrel].a[m0[m0[0].nrel].a[0]]=x[i],i++,m0[m0[0].nrel].a[0]++; ^ user.cpp:30:96: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(x[i]>='A'&&x[i]<='Z'||x[i]>='a'&&x[i]<='z') m0[m0[0].nrel].a[m0[m0[0].nrel].a[0]]=x[i],i++,m0[m0[0].nrel].a[0]++; ^ user.cpp:34:15: warning: NULL used in arithmetic [-Wpointer-arith] while(x[0]!=NULL) ^ user.cpp:43:18: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(x[i]>='A'&&x[i]<='Z'||x[i]>='a'&&x[i]<='z') ^ user.cpp:47:25: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(x[i]>='A'&&x[i]<='Z'||x[i]>='a'&&x[i]<='z') mi[mi[0].nrel].a[mi[mi[0].nrel].a[0]]=x[i],i++,mi[mi[0].nrel].a[0]++; ^ user.cpp:47:96: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(x[i]>='A'&&x[i]<='Z'||x[i]>='a'&&x[i]<='z') mi[mi[0].nrel].a[mi[mi[0].nrel].a[0]]=x[i],i++,mi[mi[0].nrel].a[0]++; ^