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#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv)
{
int i;
char c;
FILE *f;
FILE *fin;
FILE *fout;
//write to file
f
=fopen("testfile.txt","w");
for(i=0;i<50;i++)
{
}
//append to file
f
=fopen("testfile.txt","a");
for(i=0;i<50;i++)
{
}
//copy from testfile.txt to copyfile.txt
fin
=fopen("testfile.txt","r");
fout
=fopen("copyfile.txt","w");
/*
while((c=fgetc(fin))!=EOF)
{
fputc(c,fout);
}*/
}