Compilare: user.cpp: In function ‘int main()’: user.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= strlen(s1); i++) ~~^~~~~~~~~~~~~ user.cpp:22:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = strlen(s1) + 2; i <= strlen(s2) + strlen(s1) + 2; i++) ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.cpp:44:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d[i] == strlen(s1)) cnt++; ~~~~~^~~~~~~~~~~~~ user.cpp:15:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("stradacramei.in", "r", stdin); ^ user.cpp:16:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("stradacramei.out", "w", stdout); ^ user.cpp:17:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n", s1); ^ user.cpp:18:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s2); ^