Wuhan University of Science and Technology acm:1001: Chinese Edition C language Programming tutorial (second edition) Exercise 6.7

Problem Description

The output Yang Hui the first n rows of the triangle.

Input

Enter a number n (n <= 9)

Output

The output Yang Hui the first n rows of the triangle. (Note that there is no extra space at the end of the line, the number is output in%3d format)

Sample Input

34

Sample Output

      1    1   1  1   2   1        1      1   1    1   2   1  1   3   3   1

HINT

Note that there are multiple sets of inputs. Output a blank line after each set of test data.

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

{

......

}

1#include <stdio.h>2 intMain ()3 {4     intn,i,j;5     inta[Ten][Ten];6a[0][0]=a[1][0]=a[1][1]=1;7      while(SCANF ("%d", &n)! =EOF)8     {9          for(i=2; i<n;i++)Ten         { One              for(j=0; j<=i;j++) A             { -                 if(j==0|| i==j) -a[i][j]=1; the                 Else -a[i][j]=a[i-1][j-1]+a[i-1][j]; -             } -         } +  -          for(i=0; i<n;i++) +         { A              for(intk=0;k< (n-i-1); k++) at             { -printf"  "); -             } -              for(j=0; j<=i;j++) -             { -                 if(j==0) in                 { -printf"%3d", A[i][j]); to                 } +                 Else -                 { the  *printf"%4d", A[i][j]); $                 }Panax Notoginseng                  -                  the             } +printf"\ n"); A         } theprintf"\ n"); +     } -      $     return 1; $}

Wuhan University of Science and Technology acm:1001: Chinese Edition C language Programming tutorial (second edition) Exercise 6.7