C++中int,float,string,char*的转换（待续）

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//float转string   char a[100]; float b = 1.234; sprintf(a, "%f", b); string result(a);

 

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//int转string,利用sprintf int main(){     int mm = 2414;     char *ch = new char; //或者char ch[256];     string tmp;     sprintf(ch,"%d",mm); //sprintf(ch, "%f", mm)将float转string     tmp = ch;     cout << tmp + "124124";     cin >> mm; }

 

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//利用c_str将sting 转为 const char*, 一般不会要求将const char*转为char*,如果要转,先考虑函数设计问题   string s = "test"; const char* = s.c_str();

 

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//char* 或者char数组转string,直接利用构造函数char *offpath = new char[100];     ifstream inff("C:\\model.txt",ios::in);     while(!inff.eof()){         inff.getline(offpath,100);         string stmp(offpath);     }