实验1
实验1
(1)

1 #include <stdio.h> 2 #include<stdlib.h> 3 int main() 4 { 5 printf(" O \n"); 6 printf("<H>\n"); 7 printf("I I\n"); 8 printf(" O \n"); 9 printf("<H>\n"); 10 printf("I I\n"); 11 12 13 14 15 system("pause"); 16 return 0; 17 }
(2)

1 #include <stdio.h> 2 #include<stdlib.h> 3 int main() 4 { 5 printf(" O O\n"); 6 printf("<H> <H>\n"); 7 printf("I I I I\n"); 8 9 10 11 12 13 system("pause"); 14 return 0; 15 } 16

实验2

1 #include <stdio.h> 2 #include<stdlib.h> 3 int main() 4 { 5 double a,b,c; 6 scanf("%lf%lf%lf",&a,&b,&c); 7 if(a+b>c&&a+c>b&&b+c>a) 8 printf("能构成三角形\n"); 9 else 10 printf("不能构成三角形"); 11 system("pause"); 12 return 0; 13 }
实验3

1 #define _CRT_SECURE_NO_WARNINGS 2 #include<stdio.h> 3 int main() 4 { 5 char ans1, ans2; 6 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) :"); 7 ans1 = getchar(); 8 getchar(); 9 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) :"); 10 ans2 = getchar(); 11 if (((ans1 == 'Y') || (ans1=='y')) && ((ans2 == 'Y') ||(ans2== 'y'))) 12 printf("\n罗马不是一天建成的, 继续保持哦:)\n"); 13 else 14 printf("\n罗马不是一天毁灭的, 我们来建设吧\n"); 15 16 17 18 return 0; 19 }
第二个问题被直接跳过
line9是为了防止问题二的输入被吞掉,防止计算机取回车符号
实验4
1 #define _CRT_SECURE_NO_WARNINGS 2 #include<stdio.h> 3 int main() 4 { 5 double x, y; 6 char c1, c2, c3; 7 int a1, a2, a3; 8 scanf("%d%d%d",& a1, &a2, &a3);/*没加&*/ 9 printf("a1 = %d, a2 = %d, a3 = %d\n", a1, a2, a3); 10 scanf("%c%c%c", &c1, &c2, &c3); 11 printf("c1 = %c, c2 = %c, c3 = %c\n", c1, c2, c3); 12 scanf("%lf%lf", &x, &y); 13 printf("x = %lf, y = %lf\n", x, y);/*应该是%lf*/ 14 15 16 return 0; 17 }
实验5
#define _CRT_SECURE_NO_WARNINGS #include<stdio.h> int main() { int year; year = 1000000000 / 31536000; printf("10亿秒约等于%d年\n", (int)(year+0.5)); return 0; }
实验6
1 #define _CRT_SECURE_NO_WARNINGS 2 #include<stdio.h> 3 #include<math.h> 4 int main() 5 { 6 long double x, ans; 7 while (scanf("%Lf", &x) != EOF) { 8 ans = powl(x, 365); 9 printf("% .2Lf的365次方:% .2f\n", x,ans); 10 } 11 12 13 return 0; 14 }
实验7
1 #define _CRT_SECURE_NO_WARNINGS 2 #include<stdio.h> 3 #include<math.h> 4 int main() 5 { 6 double F, C; 7 while (scanf("%lf", &C) != EOF) { 8 F = (9.0 / 5.0) * C + 32; 9 printf("摄氏度是%.2lf时,华氏度为%.2lf", C, F); 10 } 11 12 13 return 0; 14 }
实验8
1 #define _CRT_SECURE_NO_WARNINGS 2 #include<stdio.h> 3 #include<math.h> 4 int main() 5 { 6 double a, b, c, s, p, n; 7 while (scanf("%lf%lf%lf", &a, &b, &c) != EOF) { 8 p = (a + b + c) / 2; 9 n = p * (p - a) * (p - b) * (p - c); 10 s = sqrt(n); 11 printf("面积是:%.3lf", s); 12 13 } 14 15 16 return 0; 17 }