C中的上下三角打印(Up-side down triangle printing in C)
优质
小牛编辑
130浏览
2023-12-01
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形状打印星形*,但是颠倒了。
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 from 1 to I
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 upsidedown_triangle
FOR I = 1 to N DO
FOR J = 1 to N-I DO
PRINT " "
END FOR
FOR J = 1 to I DO
PRINT "* "
END FOR
END FOR
end procedure
实现 (Implementation)
在C中实现等边三角形倒置如下 -
#include <stdio.h>
int main() {
int n,i,j;
n = 5;
for(i = 1; i <= n; i++) {
for(j = 1; j < i; j++)
printf(" ");
for(j = i; j <= n; j++)
printf("* ");
printf("\n");
}
return 1;
}
输出应该是这样的 -
* * * * *
* * * *
* * *
* *
*