Compilare: user.cpp: In function ‘int main()’: user.cpp:33:32: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[15]’ [-Wformat=] scanf("%s %s\n",&c1,&c2); ^ user.cpp:33:32: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[15]’ [-Wformat=] user.cpp:50:19: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] c1[nc]=NULL; ^ user.cpp:52:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<TA[add].size();++j) ^ user.cpp:68:11: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] c1[nc]=NULL; ^ user.cpp:70:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<TA[add].size();++j) ^ user.cpp:24:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dictionar.in","r",stdin); ^ user.cpp:25:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dictionar.out","w",stdout); ^ user.cpp:29:12: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:30:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^ user.cpp:33:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s %s\n",&c1,&c2); ^ /tmp/cc469MIK.o: In function `main': user.cpp:(.text.startup+0x62): warning: the `gets' function is dangerous and should not be used.