printf
#include <stdio.h>
int main ()
{
int a=125 ;
printf("%10d",a);
return 0;
}
#include <stdio.h>
int main ()
{
int a=125 ;
printf("%-10d",a);
return 0;
}
#include <stdio.h>
int main ()
{
float a=125.25 ;
printf("%.2f\n",a);
return 0;
}
打印float的整数部分
#include <stdio.h>
int main ()
{
float a=125.25 ;
printf("%.0f\n",a);
return 0;
}
#include <stdio.h>
int main ()
{
int a=5,b=3,c=25,d=12;
float qu;
int re,in ,de;
qu=a/b;
re=a%b;
in=++c;
de=--d;
printf("wei %f\n",qu);
printf("yushu wei %d\n",re);
printf("jia 1 hou wei %d\n",in);
printf("jian 1 hou wei %d\n",de);
return 0;
}
#include<stdio.h>
int main ()
{
int num;
printf("\n请输入一个整数:");
scanf("%d",&num);
if((num%2)==0)
printf("%d是偶数;\n",num);
else
printf("%d是奇数;\n",num);
return 0;
}
#include<stdio.h>
int main ()
{
int num ;
printf("\n输入一个数字：");
scanf ("%d",&num);
if((num%5)==0)
printf("\n该数能被5整除\n");
else
printf("\n该数不能被5整除\n");
}
13
#include <stdio.h>
int main()
{
int a=1,b=13;
if(a++||b--)
printf("%d",b);
return 0;
}
#include <stdio.h>
int main()
{
float rate1,rate2,rate3;
double discount,total;
printf("\n请输入第一种商品的价格：");
scanf("%f",&rate1);
printf("\n请输入第二种商品的价格：");
scanf("%f",&rate2);
printf("\n请输入第三种商品的价格：");
scanf("%f",&rate3);
total=rate1+rate2+rate3;
if((rate1>50)||(rate2>50)||(rate3>50)||(total>100))
{
discount=0.15*total;
total=total-discount;
printf("\n折后总价为：%6.2f\n",total);
}
else
printf("\n总价为：%6.2f\n",total);
return 0;
}
#include <stdio.h>
int main()
{
int year;
printf("输入你要判断的年份\n");
scanf("%d",&year);
if((year%4)==0&(year%100!=0)||(year%400)==0)
printf("是闰年");
else
printf("不是闰年");
return 0;
}