1）度过的天数
#include <stdio.h>
#include <stdlib.h>
int main()
{
int age;
printf("input your age:\n");
scanf("%d",&age);
age*=365;
printf("Your days: %d!",age);
return 0;
}
2）三个数的最大值
#include <stdio.h>
#include <stdlib.h>
int main()
{
int number1,number2;
int max;
scanf("%d",&number1);
scanf("%d",&number2);
if(number1<=number2)
{
max=number2;
}
else
{
max=number1;
}
printf("%d",max)
return 0;
}
#include <stdio.h>
#include <stdlib.h>
int main()
{
int number1,number2,number3;
int max;
scanf("%d",&number1);
scanf("%d",&number2);
scanf("%d",&number3);
if(number1<=number2)
{
max=number2;
}
else
{
max=number1;
}
if(max<=number3)
{
max=number3;
}
printf("%d",max);
return 0;
}
3）圆面积的计算
#include <stdio.h>
#include <stdlib.h>
#define PI 3.14
int main()
{
float r,area;
scanf("%f",&r);
area=PI*r*r;
printf("%5.1f",area);
return 0;
}