1
`#include <stdio.h>
int main()
{
printf(" o \n");
printf("
printf("I I\n");
return 0;
`
2
`#include <stdio.h>
include <math.h>
int main()
{
double a, b, c;
scanf_s("%lf%lf%lf", &a, &b, &c);
if (a <= 0 || b <= 0 || c <= 0 || !(a + b > c && a + c > b && c + b > a))
printf("不能构成三角形\n");
else
printf("能构成三角形\n");
return 0;
}`
3
#include <stdio.h> int main() { char ans1, ans2; printf("每次课前认真预习、课后及时复习了没? (输入y或Y表示有，输入n或N表示没有) : y "); ans1 = getchar(); getchar(); // 思考这里为什么要加这一行。试着去掉这一行，看看对运行有没有影响。 printf("\n动手敲代码实践了没? (输入y或Y表示敲了，输入n或N表示木有敲) : y "); ans2 = getchar(); if ( ans1=="y" && ans2=="y"||ans1=="Y"&&ans2=="Y") // 待补足，判断用户回答ans1和ans2都是小写y或大写Y printf("\n罗马不是一天建成的, 继续保持哦:)\n"); else printf("\n罗马不是一天毁灭的, 我们来建设吧\n"); return 0; }
4
`#include<stdio.h>
int main()
{
double x, y;
char c1, c2, c3;
int a1, a2, a3;
scanf_s("%d%d%d",&a1,&a2, &a3);
printf("a1 = %d, a2 = %d, a3 = %d\n", a1, a2, a3);scanf_s(" %c%c%c", &c1,1, &c2,1, &c3,1);
printf("c1 = %c, c2 = %c, c3 = %c\n", c1, c2, c3);scanf_s("%lf,%lf", &x, &y);
printf("x = %f, y = %lf\n", x, y);
return 0;
}`
5
#include <stdio.h> int main() { int year; int total_seconds = 1000000000; int seconds_per_year = 365 * 24 * 3600; year = (total_seconds + seconds_per_year / 2) / seconds_per_year; printf("10亿秒约等于%d年\n", year); return 0; }
6
`#include <stdio.h>
include <math.h>
int main()
{
double x, ans;
while (scanf_s("%lf", &x) != EOF)
{
ans = pow(x, 365);
printf("%.2f的365次方: %.2f\n", x, ans);
printf("\n");
}
return 0;
}`
7
`#include<stdio.h>
include<math.h>
int main()
{
double F;
double C;
while (scanf_s("%lf", &C) != EOF)
{F = 9.0 / 5 * C + 32;printf("华氏度F=%lf\n", F);
}
return 0;
}`
8
`#include<stdio.h>
include<math.h>
int main()
{
double a;
double b;
double c;
double s;
double hl;
while (scanf_s("%lf%lf%lf",&a, &b, &c)!= EOF)
{
s = (a + b + c) / 2.0;
hl = sqrt(s * (s - a) * (s - b) * (s - c));
printf("%lf\n", hl);
}
return 0;
`
