不用库函数,用C语言实现将一整型数字转化为字符串

int getlen(char *s){
int n;
for(n = 0; *s != ‘’; s++)
n++;
return n;
}
void reverse(char s[])
{
int c,i,j;
for(i = 0,j = getlen(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; if((sign = n) < 0) n = -n; i = 0; do{ s[i++] = n%10 + '0'; }while((n /= 10) > 0);
if(sign < 0) s[i++] = '-'; s[i] = ''; reverse(s);}