Compilare: user.cpp: In function ‘int main()’: user.cpp:45:25: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[31]’ [-Wformat=] scanf("%d\n%s",&k,&a); ^ user.cpp:52:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(a); i++) ^ user.cpp:60:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1; j<i+k && j<strlen(a); j++) ^ user.cpp: In function ‘int caut(int, int)’: user.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:42:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("blis.in","r",stdin); ^ user.cpp:43:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("blis.out","w",stdout); ^ user.cpp:45:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n%s",&k,&a); ^