Compilare: main.cpp: In function 'void inter(int)': main.cpp:82:33: warning: array subscript has type 'char' [-Wchar-subscripts] s[id] = ini[remap[c[lst]]]; ^ main.cpp: In function 'int main()': main.cpp:100:21: warning: array subscript has type 'char' [-Wchar-subscripts] remap[tag[i]] = i; ^ main.cpp:154:32: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=] fprintf(g,"%d\n",ans.size()); ^ main.cpp:88:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d\n",&n); ^ main.cpp:99:66: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c=%d-%d/%d\n",&tag[i],&fst[i],&snd[i],&pas[i]); ^ main.cpp:129:28: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(c + 1,NMAX + 5,f); ^ 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:129:28: /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); ^