1、#include<stdio.h>#include<stdlib.h>//输入头文件
2、#define N 10
3、void main(){int a[N][N] = { 0 };//初始化数组a，所有元素都为0//初始化二维数组for (int i = 0; i < 10; i++){for (int j = 0; j <= i; j++)//j<=i,第i行只有i+1个{if (j == 0 || i == j)//如果是第一列，全部为1{a[i][j] = 1;//接着赋值}else{a[i][j] = a[i - 1][j - 1] + a[i - 1][j];//杨辉三角计算公式}}printf("\n");}for (int i = 0; i < 10; i++){printf("%*d", 30 - i * 2, a[i][0]);//打印第一列//按照限定的宽度阶梯变化，打印等腰三角形for (int j = 1; j <=i; j++){printf("%4d", a[i][j]);}printf("\n");}getchar();}
