UVaOJ458 The Decoder

看出来了，ascll -7

WA：

/*458 - The Decoder*/
# include <stdio.h>
int main()
{
    char ch;
    while ((ch=getchar()) != EOF)
        if (ch != '\n') putchar((ch+121)%128);
        else putchar('\n');
    return 0;
}

AC：

/*458 - The Decoder*/
# include <stdio.h>
int main()
{
    char ch;
    while ((ch=getchar()) != EOF)
        if (ch != '\n') putchar(ch-7);
        else putchar('\n');
    return 0;
}