>>521

int main(void)
{
　　system("cat present.dat | tr a-z A-Z > tmp.txt");
　　system("sed -e \"s/^/code:/\" tmp.txt > tmp2.txt");
　　system("sed -e \"s/ /\\nname:/\" tmp2.txt > tmp3.txt");
　　system("sed -e \"s/ /\\nprice:/\" tmp3.txt > tmp4.txt");
　　system("sed -e \"/price/a\n\" tmp4.txt > tmp5.txt");
　　system("perl -pe 's/price:\n/price:xxxx\n/' tmp5.txt > output.txt");
　　system("rm tmp.txt tmp2.txt tmp3.txt tmp4.txt tmp5.txt");
　　return 0;
}