#include<stdio.h>
int main(void)
{
FILE *fp;
char s[10]
fp= fopen("text.dat","w");
fputs("welcome",fp);
fclose(fp);
fp=fopen("text.dat","a+");
fprintf(fp,"%d",55);
rewind(fp);
fscanf(fp,"%s",s);
puts(s);
fclose(fp);
return 0;
}
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