Compilare: user.cpp: In function ‘int main()’: user.cpp:26:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[i]!=b[j]) if(d[i-1][j]>d[i][j-1]) d[i][j]=d[i-1][j]; ^ user.cpp:26:40: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(a[i]!=b[j]) if(d[i-1][j]>d[i][j-1]) d[i][j]=d[i-1][j]; ~^~