Compilare: user.cpp: In function ‘int main()’: user.cpp:20:29: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if( q[i] >= 'a' && q[i] <= 'z' || q[i] >= 'A' && q[i] <= 'Z' ) s++; ^ user.cpp:14:18: warning: unused variable ‘t’ [-Wunused-variable] int n, i, s, t, d, k; ^ user.cpp:14:24: warning: unused variable ‘k’ [-Wunused-variable] int n, i, s, t, d, k; ^ user.cpp:11:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("text.in","r",stdin); ^ user.cpp:12:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("text.out","w",stdout); ^