Compilare: user.cpp: In function ‘int main()’: user.cpp:24:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < strlen(paragraph)) { ^ user.cpp:25:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < strlen(paragraph) && paragraph[j] == ' ') j++; ^ user.cpp:27:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < strlen(paragraph) && paragraph[j] != ' ') j++; ^