Compilare: user.cpp: In function ‘int main()’: user.cpp:49:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[i-1][i]=c[ch[i-1]][ch[i]]; ^ user.cpp:49:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[i-1][i]=c[ch[i-1]][ch[i]]; ^ user.cpp:57:72: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[i][i+lun-1]=min(sol[i][i+lun-1-l]+c[ch[i+lun-l]][ch[i+lun-l+1]],sol[i+1][i+lun-2]+c[ch[i]][ch[i+lun-1]],sol[i+l-1][i+lun-1]+c[ch[i]][ch[i+1]]); ^ user.cpp:57:87: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[i][i+lun-1]=min(sol[i][i+lun-1-l]+c[ch[i+lun-l]][ch[i+lun-l+1]],sol[i+1][i+lun-2]+c[ch[i]][ch[i+lun-1]],sol[i+l-1][i+lun-1]+c[ch[i]][ch[i+1]]); ^ user.cpp:57:114: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[i][i+lun-1]=min(sol[i][i+lun-1-l]+c[ch[i+lun-l]][ch[i+lun-l+1]],sol[i+1][i+lun-2]+c[ch[i]][ch[i+lun-1]],sol[i+l-1][i+lun-1]+c[ch[i]][ch[i+1]]); ^ user.cpp:57:127: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[i][i+lun-1]=min(sol[i][i+lun-1-l]+c[ch[i+lun-l]][ch[i+lun-l+1]],sol[i+1][i+lun-2]+c[ch[i]][ch[i+lun-1]],sol[i+l-1][i+lun-1]+c[ch[i]][ch[i+1]]); ^ user.cpp:57:156: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[i][i+lun-1]=min(sol[i][i+lun-1-l]+c[ch[i+lun-l]][ch[i+lun-l+1]],sol[i+1][i+lun-2]+c[ch[i]][ch[i+lun-1]],sol[i+l-1][i+lun-1]+c[ch[i]][ch[i+1]]); ^ user.cpp:57:165: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[i][i+lun-1]=min(sol[i][i+lun-1-l]+c[ch[i+lun-l]][ch[i+lun-l+1]],sol[i+1][i+lun-2]+c[ch[i]][ch[i+lun-1]],sol[i+l-1][i+lun-1]+c[ch[i]][ch[i+1]]); ^ user.cpp: In function ‘int min(int, int, int)’: user.cpp:17:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:20:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("redu.in","r",stdin); ^ user.cpp:21:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("redu.out","w",stdout); ^ user.cpp:22:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:23:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&ch[0]); ^ user.cpp:33:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&ch[i]); ^ user.cpp:37:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&ch[0]); ^ user.cpp:42:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&c[i][j]);