完整修改好的程序

#include

#include //错

void dayingz();

void menu();

void dayingdaosanjiaoxing();

void dayingn();

void dayingx();

void main()

{

menu();

}

void menu()

{

int select;

printf("    打印图形   \n");

printf("***********************************\n");

printf("   1打印z        \n");

printf("   2打印n        \n");

printf("   3打印x        \n");

printf("   4打印倒三角        \n");

printf("   0退出           \n");

printf("***********************************\n");

printf("请输入你的选项(0-4)：\n");

scanf("%d",&select);

while(select)

{

switch(select)

{

case 1:

dayingz();

break;

case 2:

dayingn();

break;

case 3:

dayingx();

break;

case 4:

dayingdaosanjiaoxing();

break;

case 0:

break;

}

printf("请输入你的选项(0-4)：\n");

scanf("%d",&select);

}

}

void dayingz()

{

int i,j,n;

printf("输入行数：");

scanf("%d",&n);

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

{

for(j=1; j<=n; j++)if((i==1)||(i==n)||(i+j==n+1))printf("*");

else printf(" ");

printf("\n");

}

}

void dayingdaosanjiaoxing()

{

int i,j,n;

printf("输入行数：");

scanf("%d",&n);

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

{

for(j=1; j<=n-i; j++)printf(" ");

for(j=2*i-1; j>=1; j--)printf("*");

printf("\n ");

}

}

void dayingn()

{

int  i,j,n;

printf("输入行数：");

scanf ("%d",&n);

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

{

for (j=1; j<=n; j++)if((j==1)||(j==n)||(i==j))printf("*");

else printf(" "); //少空格

printf("\n");

}

}

void dayingx()

{

int a,b,c,d;

printf("输入行数：");

scanf("%d",&a);

for(b=1; b<=a; b++)

{

for (c=1; c<=2*a-1; c++)if(c==b||c==2*a-b)printf("*");

else printf(" "); //少空格

printf("\n");

}

for (b=a-1; b>0; b--)

{

for(c=1; c<=2*a-1; c++)if(c==b||c==2*a-b)printf("*");

else printf(" ");  //少空格

printf("\n");

}

}