float f_value = 15.02;
int i_tmp;
time_t t;
srand((unsigned)time(&t)); //初始化随机种子, 否则随机数不随机
i_tmp = rand();
i_tmp -= (i_tmp >> 4 << 4);
f_value += i_tmp;
float f_value = 15.02;
int i_tmp;
time_t t;
srand((unsigned)time(&t)); //初始化随机种子, 否则随机数不随机
i_tmp = rand();
i_tmp -= (i_tmp >> 4 << 4);
f_value += i_tmp;