main()
{ int i,j,k;
for (i=1;i<=4; i++)
{ for (j=1;j<=4-i;j++) printf(" ");
for (k=1;k<=2*i-1;k++) printf( "*");
printf("\n");
}
for (i=1;i<=3;i++)
{ for (j=1;j<=i;j++) printf(" ");
for (k=1;k<=7-2*i;k++) printf( "*");
printf("\n");
}
}
效果如下:
*
***
*****
*******
*****
***
*
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