Compilare: user.cpp: In function ‘void make_pi()’: user.cpp:16:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 2; i <= strlen(s + 1); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:29:18: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> s + 1; ^ user.cpp:37:25: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> word + 1; ^