Compilare: user.cpp: In function ‘void lee(int, int)’: user.cpp:31:9: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[i+1][j]!=-1) if((a[i+1][j]==0)&&(i+1<=n)) {a[i+1][j]=a[i][j]+1; poz[i2].c=i+1; poz[i2].d=j; i2++;} ^ user.cpp:34:10: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[i-1][j]!=-1) if((a[i-1][j]==0)&&(i-1>=0)) {a[i-1][j]=a[i][j]+1; poz[i2].c=i-1; poz[i2].d=j; i2++;} ^ user.cpp:37:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[i][j+1]!=-1) if((a[i][j+1]==0)&&(j+1)) {a[i][j+1]=a[i][j]+1; poz[i2].c=i; poz[i2].d=j+1; i2++;} ^ user.cpp:40:9: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[i][j-1]!=-1) if((a[i][j-1]==0)&&(j-1>=0)) {a[i][j-1]=a[i][j]+1; poz[i2].c=i; poz[i2].d=j-1; i2++;} ^