C语言中数组转化为字符串的方法

#include<stdio.h>
#include <stdlib.h>
#include <string.h>
#define NR(x)  (sizeof(x)/sizeof(x[0]))
void  ToString(char array[] , char array_size) ;
int main(void)
{
//1.
char *p = "hello";
char array[]={1,'F','P',4,5,'U',7,'I',9,'r','e'};
char buffer[20] = {0};
int i ;
for(i = 0 ; i < NR(array) ; i++){
if(array[i] < 60) {
buffer[i] = array[i] + '0' ;
}
else
{
buffer[i] = array[i] ;
}
}
printf("%s\n",buffer);
return 0 ;

}