int,char*,string转换
int 转 string
int i = 10; string s = std::to_string(i);
char* 转 int
#include <stdlib.h> char ch[] = "10"; int i = atoi(ch);
int i = 10; string s = std::to_string(i);
#include <stdlib.h> char ch[] = "10"; int i = atoi(ch);
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