Question

用Microsoft Visual C++ 软件编写一些C语言程序，要求有效行数不少于50 行.谢谢大家

Answer 1

#include <stdio.h>

void main(){

int num;

int i,j;

printf("请输入数字：\n");

scanf("%d",&num);

int m=num-1;

for ( i=1;i<=num;i++)

{

for ( j=1;j<=m;j++)

{

printf(" ");

}

m--;

for ( j=1;j<=i;j++)

{

printf("%d",j);

}

for ( j=1;j<=i-1;j++)

{

printf("%d",i-j);

}

printf("\n");

}

m=1;

for ( i=num-1;i>=1;i--)

{

for ( j=1;j<=m;j++)

{

printf(" ");

}

m++;

for ( j=1;j<=i;j++)

{

printf("%d",j);

}

for ( j=1;j<=i-1;j++)

{

printf("%d",i-j);

}

printf("\n");

}

}