仓促之间写的，有些不足，希望道友们给我建议

//打印杨辉三角 #include <stdio.h>int main(){int i = 0;int j = 0;int lien = 0;int arr1[100] = {0};int arr2[100] = {0};arr1[0] = 1;printf("input lien:>");scanf("%d",&lien);for(i=0;i<=lien;i ++){if(i<2){for(j=0;j<i;j++)arr2[j] = 1;}else{for(j=0;j<i;j++){if(j == 0 || j == (i-1))arr2[j] = 1;else{arr2[j] = arr1[j-1] + arr1[j];}}}for(j=0;j<i;j++){printf("%d ",arr2[j]);arr1[j] = arr2[j];}printf("\n");}return 0;}