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C/C++ code:

char old[] = "sdfsd.txt", new_name[] = "sdfsd1.txt";

FILE *file;
file = fopen(old,"w");
int nn = GetLastError();
ATLASSERT(file);

FILE *file2 = fopen(old,"r+");
nn = ferror(file2);
ATLASSERT(file2);



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File1.c Fil ......

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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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