Compilare: user.cpp: In function ‘int main()’: user.cpp:123:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(hamilton[j][k][i]>hamilton[j][biti[x]][i^(1<<k)]+E[biti[x]][k]) ^ user.cpp:123:73: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(hamilton[j][k][i]>hamilton[j][biti[x]][i^(1<<k)]+E[biti[x]][k]) ^ user.cpp:124:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] hamilton[j][k][i]=hamilton[j][biti[x]][i^(1<<k)]+E[biti[x]][k]; ^ user.cpp:124:71: warning: array subscript has type ‘char’ [-Wchar-subscripts] hamilton[j][k][i]=hamilton[j][biti[x]][i^(1<<k)]+E[biti[x]][k]; ^ user.cpp:142:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[j+1][biti[k]]>dp[i+1][p]+hamilton[biti[x]][biti[k]][conf]+E[p][biti[x]]) ^ user.cpp:142:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[j+1][biti[k]]>dp[i+1][p]+hamilton[biti[x]][biti[k]][conf]+E[p][biti[x]]) ^ user.cpp:142:69: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[j+1][biti[k]]>dp[i+1][p]+hamilton[biti[x]][biti[k]][conf]+E[p][biti[x]]) ^ user.cpp:142:89: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[j+1][biti[k]]>dp[i+1][p]+hamilton[biti[x]][biti[k]][conf]+E[p][biti[x]]) ^ user.cpp:143:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[j+1][biti[k]]=dp[i+1][p]+hamilton[biti[x]][biti[k]][conf]+E[p][biti[x]]; ^ user.cpp:143:58: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[j+1][biti[k]]=dp[i+1][p]+hamilton[biti[x]][biti[k]][conf]+E[p][biti[x]]; ^ user.cpp:143:67: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[j+1][biti[k]]=dp[i+1][p]+hamilton[biti[x]][biti[k]][conf]+E[p][biti[x]]; ^ user.cpp:143:87: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[j+1][biti[k]]=dp[i+1][p]+hamilton[biti[x]][biti[k]][conf]+E[p][biti[x]]; ^ user.cpp: In function ‘char nextch()’: user.cpp:11:29: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,1,MAXBUF,fi); ^