Compilare: main.cpp: In function 'int main()': main.cpp:23:18: warning: array subscript has type 'char' [-Wchar-subscripts] d[i][s[i]]=i; ^ main.cpp:31:24: warning: array subscript has type 'char' [-Wchar-subscripts] for(i=d[1][a[1]];i<=n-l+1&&i!=0;i=d[i+1][a[1]]){ ^ main.cpp:31:54: warning: array subscript has type 'char' [-Wchar-subscripts] for(i=d[1][a[1]];i<=n-l+1&&i!=0;i=d[i+1][a[1]]){ ^ main.cpp:36:32: warning: array subscript has type 'char' [-Wchar-subscripts] j=d[j+1][a[poz]]; ^ main.cpp:16:25: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets (s+1,1005,fin); ^ main.cpp:25:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d\n",&m); ^ main.cpp:28:29: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets (a+1,1005,fin); ^ In file included from /usr/include/stdio.h:936:0, from /usr/include/c++/6/cstdio:42, from main.cpp:1: In function 'char* fgets(char*, int, FILE*)', inlined from 'int main()' at main.cpp:16:25: /usr/include/x86_64-linux-gnu/bits/stdio2.h:261:58: warning: call to '__fgets_chk_warn' declared with attribute warning: fgets called with bigger size than length of destination buffer return __fgets_chk_warn (__s, __bos (__s), __n, __stream); ^ In function 'char* fgets(char*, int, FILE*)', inlined from 'int main()' at main.cpp:28:29: /usr/include/x86_64-linux-gnu/bits/stdio2.h:261:58: warning: call to '__fgets_chk_warn' declared with attribute warning: fgets called with bigger size than length of destination buffer return __fgets_chk_warn (__s, __bos (__s), __n, __stream); ^