Create new file to write and then open it for read
#include<stdio.h>
main()
{
FILE *f1;
char c;
printf("\nData input.\n");
f1=fopen("Input","w");
while((c=getchar())!=EOF)
putc(c,f1);
fclose(f1);
printf("\nData output.\n");
f1=fopen("Input","r");
while((c=getc(f1))!=EOF)
printf("%c",c);
fclose(f1);
getch();
}
main()
{
FILE *f1;
char c;
printf("\nData input.\n");
f1=fopen("Input","w");
while((c=getchar())!=EOF)
putc(c,f1);
fclose(f1);
printf("\nData output.\n");
f1=fopen("Input","r");
while((c=getc(f1))!=EOF)
printf("%c",c);
fclose(f1);
getch();
}
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