用 C 打印弗洛伊德反向三角形程序
程序说明
弗洛伊德三角形是一个由自然数组成的直角三角形数组,用于计算机科学教育中。该三角形得名于罗伯特·弗洛伊德。它的定义是,用连续的数字填充三角形的行,从左上角的 1 开始
1 15 14 13 12 11 2 3 10 9 8 7 4 5 6 6 5 4 7 8 9 10 3 2 11 12 13 14 15 1 Floyd's Triangle Reverse of Floyd's Triangle
算法
要打印弗洛伊德三角形−
Accept the number of rows to print the Floyd’s Triangle Print value 1 for the Row 1 Print two values 2 and 3 in the next row Print three values 4, 5 and 6 in the next row Repeat till the number of rows specified
要打印弗洛伊德三角形的反向−
Accept the number of rows to print the reverse of Floyd’s Triangle Print the values in the reverse order as specified in the reverse of Floyd’s Triangle
示例
/*Program to print the Reverse of Floyd's Triangle*/
#include<stdio.h>
int main() {
int r,c=1;
int rows,revrows,r1,c1,d;
clrscr();
printf("Enter number of rows to print the Floyd's Triangle: ");
scanf("%d", &rows);
printf("
");
for (r=1;r<=(rows*(rows+1))/2;r++){
printf("%d ",r);
if(r==(c*(c+1))/2){
printf("
");
c++;
}
}
printf("
");
/*Printing the Reverse of Floyd's Triangle*/
printf("Enter number of rows to print the reverse of Floyd's Triangle: ");
scanf("%d",&revrows);
printf("
");
printf("Reverse of Floyd's Triangle
");
printf("
");
d = (revrows*(revrows+1))/2;
for(r1=revrows;r1>=1;r1--){
for(c1=r1;c1>=1;c1--,d--){
printf("%4d", d);
}
printf("
");
}
getch();
return 0;
}
输出

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