Compilare: user.cpp: In function ‘int main()’: user.cpp:13:40: warning: operation on ‘a’ may be undefined [-Wsequence-point] while(a<=temp1)v[a][0]=v[a++][m+1]=-1; ^ user.cpp:15:40: warning: operation on ‘a’ may be undefined [-Wsequence-point] while(a<=temp1)v[0][a]=v[n+1][a++]=-1; ^ user.cpp:65:36: warning: ‘qb’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<c+1<<" "<<qa<<" "<<qb; ^ user.cpp:65:25: warning: ‘qa’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<c+1<<" "<<qa<<" "<<qb; ^