Compilare: user.cpp: In function ‘int main()’: user.cpp:24:61: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] if(lung>l){p=strstr(s,w);if (p) {printf("%d",p-s+l+1);break;}} ^ user.cpp:8:52: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infinitepatternmatching.in","r",stdin); ^ user.cpp:9:54: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infinitepatternmatching.out","w",stdout); ^ user.cpp:10:14: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(w+1); ^ /tmp/cclRzmlt.o: In function `main': user.cpp:(.text.startup+0x56): warning: the `gets' function is dangerous and should not be used.