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#include <stdio.h>
void
ctoe()
{
int c;
while ((c = getchar()) != EOF) {
if (c == '\\') {
c = getchar();
switch(c) {
case 'n':
putchar('\n');
break;
case 't':
putchar('\t');
break;
default:
putchar(c);
break;
}
} else {
putchar(c);
}
}
}
void
etoc()
{
int c;
while ((c = getchar()) != EOF) {
switch(c) {
case '\n':
putchar('\\');
putchar('n');
break;
case '\t':
putchar('\\');
putchar('t');
break;
default:
putchar(c);
break;
}
}
}
int
main()
{
etoc();
return 0;
}
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