c语言编程练习

天数转换

#include<stdio.h>
int main()
{
	int x,y,z;
	scanf("%d",&x);
	y=x/7;
	z=x%7;
	printf("%d days are %d weeks, %d days.",x,y,z);
 } 

输入99

99
99 days are 14 weeks, 1 days.
----------------------

阶梯打印

#include<stdio.h>
int main()
{
	int i,j;
	char ch;
	for(j=1;j<=6;j++)
	{
		for(i=1,ch='F';i<=j;i++,ch--)
		printf("%c",ch);
	    printf("\n");
	}
	
 } 

运行结果

F
FE
FED
FEDC
FEDCB
FEDCBA