C++字符串和整数相互转换

//将整数转化为字符串，并且不使用itoa函数#include<stdio.h>void main(){int n = 12345;char temp[6] = {0};int i = 0;while (n){temp[i++] = n % 10 + '0';//整数加上‘0’隐性转化为char类型数n /= 10;}char dst[6] = {0};for (int j = 0; j < i; j++){dst[j] = temp[i-1-j];}printf("%s\n", dst);}

//将字符串转化为整数#include<stdio.h>void main(){char temp[6] = {'1','2','3','4','5'};int n = 0, i = 0;while (temp[i]){n = n * 10 + (temp[i++] - '0');//隐性转化为整数}printf("%d\n", n);}