Experiment1

Experiment 1

实验任务1

1.1

#include <stdio.h>
int main() {printf(" O \n");printf("<H>\n");printf("I I\n");printf(" O \n");printf("<H>\n");printf("I I\n");return 0;
}

1.2

#include <stdio.h>
int main() {printf(" O ");printf("\t");printf(" O \n");printf("<H>");printf("\t");printf("<H>\n");printf("I I");printf("\t");printf("I I\n");return 0;
}

实验任务2

#include <stdio.h>
int main(){// 从键盘上输入三个数据作为三角形边长，判断其能否构成三角形double a, b, c;// 输入三边边长scanf("%lf%lf%lf", &a, &b, &c);// 判断能否构成三角形if(a+b>c && a+c>b && b+c>a)printf("能构成三角形\n");elseprintf("不能构成三角形\n");、return 0;
}

实验任务3

#include <stdio.h>
int main() {char ans1, ans2;// 用于保存用户输入的答案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) : ");ans1 = getchar(); // 从键盘输入一个字符，赋值给ans1char c = getchar(); // 思考这里为什么要加这一行//printf("%d",c);结果是10，所以是用来吞掉换行符的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) : ");ans2 = getchar();if ((ans1 == 'y' || ans1 == 'Y') && (ans2 == 'y' || ans2 == 'Y')) printf("\n罗马不是一天建成的, 继续保持哦:)\n");elseprintf("\n罗马不是一天毁灭的, 我们来建设吧\n");return 0;
}

实验任务4

#include<stdio.h>
int main()
{double x, y;char c1, c2, c3;int a1, a2, a3;scanf("%d%d%d", &a1, &a2, &a3);//标注错误：未加&printf("a1 = %d, a2 = %d, a3 = %d\n", a1, a2, a3);scanf("%c%c%c", &c1, &c2, &c3);printf("c1 = %c, c2 = %c, c3 = %c\n", c1, c2, c3);scanf("%lf%lf",&x, &y);//标注错误：double对应的是ld，而且没有逗号printf("x = %lf, y = %lf\n",x, y);return 0;
}

实验任务5

#include<stdio.h>
int main()
{int year;year = (1e9)/(60*60*24*365.0) + 0.5;printf("10亿秒约等于%d年\n", year);return 0;
}

实验任务6

#include <stdio.h>
#include <math.h>
int main() {double x, ans;while(scanf("%lf", &x) != EOF) {ans = pow(x, 365);printf("%.2f的365次方: %.2f\n", x, ans);printf("\n");}return 0;
}

实验任务7

#include <stdio.h>
int main(){double x,ans;while(scanf("%lf", &x) != EOF){ans = (9.0/5)*x + 32;printf("摄氏度为%.2f时，华氏温度为%.2f\n", x, ans);printf("\n");}return 0;
}

实验任务8

#include <stdio.h>
#include <math.h>
int main() {int a,b,c;double p,area;while (scanf("%d%d%d",&a,&b,&c) != EOF) {p = (a+b+c)/2.0;area = sqrt(p*(p-a)*(p-b)*(p-c));printf("a = %d,b = %d,c = %d, area = %.3lf\n\n",a,b,c,area);}return 0;
}