《c程序设计语言》读书笔记-3.4-数字转字符串

#include <io.h>#include <stdio.h>#include <string.h>#include <stdlib.h>#include <math.h>void reverse(char s[]){    int c,i,j;    for(i = 0,j = strlen(s) - 1;i < j;i++,j--)        c = s[i],s[i] = s[j],s[j] = c;}void itoa(int n,char s[]){    int i,sign;    sign = n,i = 0;    do    {        s[i++] = abs(n % 10) + '0';    }while((n /= 10) != 0);    if(sign < 0)        s[i++] = '-';        s[i] = '\0';        reverse(s);}int main(){    int n,i;    char s[50];    n = -2147483648;    itoa(n,s);    for(i = 0;i < strlen(s);i++)        printf("%c  ",s[i]);return 0;}