程序代码：
#include<stdlib.h>
#include<stdio.h>
#include<string.h>
int main()
{
char a[100]={0};
char *p=malloc(10*sizeof(char));
printf("please enter a string\n");
fgets(a,100,stdin);
if(strlen(a)>10)
p=realloc(p,100*sizeof(char));
printf("%s\n",*p);
}if的作用是如果p的内存分配的不够用就扩展。
2016-08-12 17:56
程序代码：#include<stdlib.h>
#include<stdio.h>
#include<string.h>
int main()
{
char a[100] = { 0 };
char *p = malloc(10 * sizeof(char));
printf("please enter a string\n");
fgets(a, 100, stdin);
if (strlen(a)>10)
p = realloc(p, 100 * sizeof(char));
strcpy(p,a);
printf("%s\n", p);
}
2016-08-12 18:20
2016-08-13 07:11