Compilare: user.cpp:90:9: warning: "/*" within comment [-Wcomment] /** ^ user.cpp: In function ‘void extra()’: user.cpp:13:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<strlen(s)) ^ user.cpp:15:26: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if ('0'<=s[i]&&s[i]<='9'||s[i] == '-') ^ user.cpp:20:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ('0'<=s[i]&&s[i]<='9'&&i<strlen(s)) ^ user.cpp: In function ‘int quickselect(int*, int, int, int)’: user.cpp:33:11: warning: unused variable ‘temp’ [-Wunused-variable] int p,temp; ^ user.cpp: In function ‘int main()’: user.cpp:67:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(s);i++) ^