// 11 string字符串的比较#include 
     
      #include 
      
       using namespace std;int main(){	string s1 = "155";	string s2 = "52";	char c[] = "34";	int i, j, k, l, m, n;	i = s1.compare(s2); //compare比较的事字符而不是数字	//compare 将s1与s2比较，返回0为相等，1为s1大于s2,-1为s1小于s2;	cout<
       
        <<":"<
        
         <<"="<
         <