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void StrNullCopy(char** dst, const char* src)
{
if(src && strlen(src))
{
    *dst = (char*)malloc(strlen(src) + 1);
    strcpy(*dst, src);
}

return;
}

void StrConnect(char** dst, char *src, char ch)
{
assert(src != NULL);

if(*dst == NULL || strlen(*dst)==0)//×Ö·û´®Ö±½Ó¿½±´
{
StrNullCopy(dst, src);
return;
}

int i = 0, len = strlen(*dst);
char *tmp = (char*)realloc(*dst, strlen(*dst)+strlen(src)+1);
if(tmp == NULL)
{
printf("ÄÚ´æ·ÖÅäʧ°Ü\n");
return;
}
*dst = tmp;

(*dst)[len] = ch;
(*dst)[len+1] = '\0';
strcat(*dst, src);

return;
}

int  main()
{   
char *data = NULL;
char addition[]="TestData";
for(int i=0; i <2; i++)
{
StrConnect(&data, addition, ',');//×Óº¯Êý³öÏÖÄÚ´æÐ¹Â©
}
printf("%s\n", data);

free(data);//´Ë´¦ÄÚ´æÎÞ·¨ÊÍ·Å
data = NULL;

return 0;
}

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#include <stdio.h>
#include <graphics.h>
void main()
{
  int x0,y0,x1,y1,driver,mode,i;
  driver=VGA;
  mode=VGAHI;
  initgraph(&driver,&mode,&qu ......

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#include <stdio.h>
int main()
{
  char x, y, z;
  int i;
  int a[16];
  for(i=0; i<=16; i++)
  {
  a[i] = 0;
  ......

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