Compilare: user.cpp: In function ‘int main()’: user.cpp:36:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] {strcat(so[sol],s[v[i]]); ^ user.cpp:37:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] so[sol][strlen(so[sol])]='\\'; ^ user.cpp:37:55: warning: array subscript has type ‘char’ [-Wchar-subscripts] so[sol][strlen(so[sol])]='\\'; ^ user.cpp:39:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] strcat(so[sol],a); ^ user.cpp:22:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&chr); ^ user.cpp:25:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&chr); ^