入门C语言只需一个星期（星期二）-赋值运算符

=     x = 5    x = 5+=    x += 3   x = x + 3-=    x -= 3   x = x - 3*=    x *= 3   x = x * 3/=    x /= 3   x = x / 3%=    x %= 3   x = x % 3&=    x &= 3   x = x & 3|=    x |= 3   x = x | 3^=    x ^= 3   x = x ^ 3>>=   x >>= 3  x = x >> 3<<=   x <<= 3  x = x << 3