懂了，非常感谢

最好买一本c语言程序设计的书看一看，对学习c语言的很有帮助。

不是每行5个吗？看看下面的程序吧：
#include <stdio.h>
#include <stdlib.h>

#define NPERLINE 5

void print(int npairs) {
    static int count = 0;

    printf("%10d", npairs);
    if(++count % NPERLINE == 0)
        printf("\n");
}

int main(void) {
    int first, second;
    int nmonth;

    printf("Input the number of month:\n");
    scanf("%d", &nmonth);

    first = second = 1;
   
    if(nmonth <= 0)
        return EXIT_SUCCESS;

    print(1);
    if(nmonth == 1)
        return EXIT_SUCCESS;

    print(1);
    if(nmonth == 2)
        return EXIT_SUCCESS;

    nmonth -= 2;
    while(nmonth-- > 0) {
        first += second;
        second += first;

        print(first);

        if(nmonth-- > 0) {
            print(second);
        }
    }
    printf("\n");
    return EXIT_SUCCESS;
}