String算法
1. 反转一个string
const int SIZE = 100;
char a[SIZE];
cin.getline(a, SIZE);
size_t nChar = strlen(a);
char chTmp;
for(size_t i = 0, j = nChar-1; i < j; ++i, --j)
{
chTmp = a[i];
a[i] = a[j];
a[j] = chTmp;
}
cout << a;
2.