C中的等边三角形印刷（Equilateral triangle printing in C）

所有边相等的三角形称为等边三角形。 我们现在将看到如何以等边三角形打印星星*。

算法 (Algorithm)

算法看起来像这样 -

Step 1 - Take number of rows to be printed, n.
Step 2 - Make an iteration for n times
Step 3 - Print " " (space) for in decreasing order from 1 to n-1
Step 4 - Print "* " (start, space) in increasing order
Step 5 - Return

伪代码 (Pseudocode)

我们可以为上述算法推导出一个伪代码，如下所示 -

procedure equi_triangle
   FOR I = 1 to N DO
      FOR J = 1 to N DO
         PRINT " " 
      END FOR
      FOR J = 1 to I DO
         PRINT "* "
      END FOR
   END FOR
end procedure

实现 (Implementation)

在C中实现等边三角形如下 -

#include <stdio.h>
int main() {
   int n,i,j;
   n = 5;   // number of rows.
   for(i = 1; i <= n; i++) {
      for(j = 1; j <= n-i; j++)
         printf(" ");
      for(j = 1; j <= i; j++)
         printf("* ");
      printf("\n");
   }
   return 1;
}

输出应该是这样的 -

     *
    * *
   * * *
  * * * *
 * * * * *