题意：显示杨辉三角形。
解法：
组合数学公式：combi(n,m)=combi(n-1,m-1)+combi(n-1,m);
至于为什么有这个公式呢？那就是高中数学的内容啦
1: #include<stdlib.h>
2: #include<string.h>
3: #include<stdio.h>
4: #define N 31
5: int map[N][N];
6: void init(){
7: int i,j;
8: memset(map,0,sizeof(map));
9: map[0][0]=1;
10: for(i=1;i<N;i++){
11: for(j=1;j<=i;j++){
12: map[i][j]=map[i-1][j-1]+map[i-1][j]; //关键代码
13: }
14: }
15: }
16: int main(){
17: int n,i,j,cnt=0;
18: init();
19: while(scanf("%d",&n)!=EOF){
20: cnt++;
21:
22: for(i=1;i<=n;i++){
23: for(j=1;j<=i;j++){
24: if(j!=1) printf(" ");
25: printf("%d",map[i][j]);
26: }
27: printf("\n");
28: }
29: printf("\n");
30: }
31: }
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }