Compilare: user.cpp: In function ‘int main()’: user.cpp:16:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (int i = 1;i <= n;++i) a += p[s[i]]; ^ user.cpp:18:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (int i = 1;i <= n && w - p[s[i]] >= 0;++i) ^ user.cpp:21:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] w-=p[s[i]]; ^ user.cpp:8:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("texttrim.in","r",stdin); ^ user.cpp:9:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&p[' ']); ^ user.cpp:10:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i='a';i<='z';++i) scanf("%d",p+i); ^ user.cpp:11:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n"); ^ user.cpp:12:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%1000000[^\n]",s+1); ^ user.cpp:14:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&w); ^