c语言之输出菱形：[2]行数用户输入

1、写入头文件#include"stdio.h"#include"math.h"

2、main() /*函数体*/辘腋粪梯{ int h,k,x,v,n,t; printf("please input the number of *\n媪青怍牙"); scanf("%d",&n);t=n/2;for(h=-t;h<=t;h++){ v=abs(h);for(k=1;k<=v;k++) printf(" ");for(x=1;x<=n-2*v;x++) printf("*");printf("\n");}getch();}

3、运行结果如下，星号个数可变