Compilare: user.cpp: In function ‘int main()’: user.cpp:13:38: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[200111]’ [-Wformat=] scanf("%s %s %d", &str, &str2, &c); ^ user.cpp:13:38: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[200111]’ [-Wformat=] user.cpp:15:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(str); ++i) ^ user.cpp:11:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("calcul.in", "r", stdin); ^ user.cpp:12:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("calcul.out", "w", stdout); ^ user.cpp:13:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s %s %d", &str, &str2, &c); ^