赵文浚 • 10个月前
#include<iostream>
using namespace std;
int main()
{
char a;
a = cin.get();
if ((a - 1) >= 32 && (a - 1) <= 126)
{
cout << a - 1 << endl;
}
else
{
cout << "Input Error!" << endl;
}
if ((a + 1) >= 32 && (a + 1) <= 126)
{
cout << a + 1 << endl;
}
else
{
cout << "Input Error!" << endl;
}
return 0;
}
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