#include <
stdio.h>
int main()
{
int i,j,n=6;
//è¾åºç¬¬ä¸è¡ï¼n-1ä¸ªç©ºæ ¼å1个æå·å¹¶æ¢è¡
for(j=1; j<=n-1; ++j) //è¾åºn-iä¸ªç©ºæ ¼
printf(" ");
printf("*\n");
//åè¾åºä¸é´çn-2è¡
for(i=2;i<=n-1;++i) //ä¸å
±è¦è¾åºn-2è¡
{
//è¾åºç¬¬iè¡
for(j=1; j<=n-i; ++j) //è¾åºn-iä¸ªç©ºæ ¼
printf(" ");
printf("*"); //åè¾åºä¸ä¸ªæå·
for(j=1; j<=2*i-3; ++j) //ç¶åè¾åº2*i-3ä¸ªç©ºæ ¼
printf(" ");
printf("*\n");//è¾åºä¸ä¸ªæå·åæ¬è¡ç»æï¼æ¢è¡
}
//è¾åºæåä¸è¡:2*n-1个æå·
for(j=1; j<=2*n-1; ++j)
printf("*");
printf("\n");
return 0;
}
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/738b4710b912c8fc9914a966f9039245d78821b1?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
#include <stdio.h>
int main( )
{
int i,j,n=6;
for(i=1;i<=n;++i) //ä¸å
±è¦è¾åºnè¡
{
//è¾åºç¬¬iè¡
for(j=1; j<=n-i; ++j) //è¾åºn-iä¸ªç©ºæ ¼
printf(" ");
for(j=1; j<=2*i-1; ++j) //è¾åº2*i-1个æå·
printf("*");
printf("\n");
}
return 0;
}
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/4d086e061d950a7bb316106f0fd162d9f2d3c97e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
#include <stdio.h>
void print_triangle(int n,int x,int t)
//n为æ¯ä¸ªå°
ä¸è§å½¢çè¡æ°ï¼x为è¿ç»è¾åºä¸è§å½¢ç个æ°,t为ä¸è§å½¢çåå³çä½ç§»(1表示1ä¸ªç©ºæ ¼)
{
int i,k,j;
for(i=0;i<n;i++) //æ§å¶è¡æ°
{
for(k=0;k<t;k++) //æ§å¶ä½ç§»
printf("%c",32); //ç©ºæ ¼ASCIIç 为32
for(j=x;j>0;j--) //æ§å¶ä¸ªæ°
{
for(k=n-1;k>i;k--)
printf("%c",32);
for(k=0;k<i*2+1;k++)
printf("%c",42);
for(k=n;k>i&&j>1;k--)
printf("%c",32);
}
printf("\n");
}
}
int main()
{
int i,k,N,t;
printf("please input N:");
scanf("%d",&N);
for(i=1;i<=N;i++) //æ§å¶å¤§ä¸è§å½¢è¡æ°
{
t=N*(N-i);
print_triangle(N,i,t);
}
return 0;
}
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/fcfaaf51f3deb48fae35ff75f51f3a292df57838?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)