00经典程序#include"stdio.h"#definen37voidmain(){inti,k,j;for(i=1;i<=n;i++){for(k=1;k<=n-i;k++)printf("");for(j=1;j<=2*i-1;j++)printf("#");printf("\n");}}#include"stdio.h"#definen39voidmain(){inti,k,j;for(i=1;i<=n;i++){for(k=0;k<i-1;k++)printf("");for(j=0;j<2*n-i-k;j++)printf("#");printf("\n");}}#include"stdio.h"#definen40voidmain(){inti,k,j,c;for(i=1;i<=n;i++){for(k=0;k<i-1;k++)printf("*");for(j=0;j<2*n-i-k;j++)printf("#");for(c=1;c<=i-1;c++)printf("*");printf("\n");}}/*Note:YourchoiceisCIDE*/#include"stdio.h"#definen78/*必须是奇数*/voidmain(){inti,k,j,m;m=(n-1)/2;for(i=0;i<=(n-1)/2;i++)/*先输出(n-1)/2+1行，即i从0开始*/{for(k=0;k<m;k++)printf("");m--;for(j=0;j<=2*i;j++)printf("#");printf("\n");}for(i=1;i<=(n-1)/2;i++)/*输出(n-1)/2行，即i从1开始，看看与上面对比*/{for(k=1;k<i+1;k++)printf("");for(j=0;j<n-2*i;j++)printf("#");printf("\n");}}/*Note:YourchoiceisCIDE*/#include"stdio.h"#definen77/*此处必须是奇数，记住是必须，否则乱套*/voidmain(){inti,k,j,m,h;m=(n-1)/2;for(i=0;i<=(n-1)/2;i++){for(k=0;k<m;k++)printf("*");m--;for(j=0;j<=2*i;j++)printf("#");for(h=0;h<=m;h++)printf("*");printf("\n");}for(i=1;i<=(n-1)/2;i++){for(k=1;k<i+1;k++)printf("*");for(j=0;j<n-2*i;j++)printf("#");for(h=1;h<i+1;h++)printf("*");printf("\n");}}/*Note:YourchoiceisCIDE*/#include"stdio.h"#definen25voidmain(){inti,k,j,m,h;m=(n-1)/2;h=65;for(i=0;i<=(n-1)/2;i++){for(k=0;k<m;k++)printf("");m--;for(j=0;j<=2*i;j++)printf("%c",h);h++;printf("\n");}for(i=1;i<=(n-1)/2;i++){for(k=1;k<i+1;k++)printf("");for(j=0;j<n-2*i;j++)printf("%c",h);h++;printf("\n");}}/*Note:YourchoiceisCIDE*/#include"stdio.h"#definen25voidmain(){inti,k,j,m,h;m=(n-1)/2;h=getchar();for(i=0;i<=(n-1)/2;i++){for(k=0;k<m;k++)printf("");m--;for(j=0;j<=2*i;j++)printf("%c",h);h++;printf("\n");}for(i=1;i<=(n-1)/2;i++){for(k=1;k<i+1;k++)printf("");for(j=0;j<n-2*i;j++)printf("%c",h);h++;printf("\n");}}/*Note:YourchoiceisCIDE*/#include"stdio.h