C语言无法连续输入

2015-01-17 07:45:34 196 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

C语言使用scanf连续输入字符串出现的问题 #include<stdio.h> int main() { char a,b; scanf("%c",&a)； scanf("%c",&b); printf("%c,%c",a,b); } 一段看上去很简单的代码，即使是C语言初学者也能看懂。可是在运行的时候却出现了问题： ①输入a后按下回车 ②用空格隔开之后再按下回车相信和我一样的大部分初学者，看着自己天衣无缝的代码，百思不得其解。让我们先来看看，在百度百科中，对于scanf函数的解释在①中，我们只输入了阅读详情

题目：
Input a number N, and do the prime factorization（质因数分解）.

The input contains several test cases. Each test case contains exact one integer N.

For each test case, you should output at least one line for the prime factorization of N. For example, if N = 144 = 24 * 32, then you should output two lines for this test case:

2 4

3 2

There should be an empty line between test cases.

Data Promise

For all test cases, 2 <= N <= 105

Sample Input

2

10

144

Sample Output

2 1

2 1
5 1

2 4
3 2

我的代码：

#include<stdio.h>

int main() {

    int num, i, j, k = 0, t = 1, test, a[10000] = {0}, b[10000] = {0}, \

    m, n, p;

    while (scanf("%d", &num) != EOF) {

        for (i = 2; i < num; i++) {

            t = 1;

            for (j = 2; j < i; j++) {

                if (i % j == 0) {

                    t = 0;

                    break;

                }

            }

            if (t == 1 && num % i == 0) {

                a[k] = i;

                k++;

            }

        }

        for (m = 0; m < k; m++) {

            n = 1;

            test = a[m];

            while (num % test == 0) {

                test *= a[m];

                n++;

            }

            b[m] = n-1;

        }

        a[k] = b[k] = 0;

        k++;

    }

    for (j = 0; j < k-1; j++) {

        if (a[j] == 0) printf("\n");

        else printf("%d %d\n", a[j], b[j]);

    }

    return 0;

}