TASK 1
1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <time.h> 4 5 #define N 5 6 #define N1 397 7 #define N2 476 8 #define N3 21 9 10 int main() { 11 int cnt; 12 int random_major, random_no; 13 14 srand(time(NULL)); // 以当前系统时间作为随机种子 15 16 cnt = 0; 17 while(cnt < N) { 18 random_major = rand() % 2; 19 20 if(random_major) { 21 random_no = rand() % (N2 - N1 + 1) + N1; 22 printf("20248329%04d\n", random_no); 23 } 24 else { 25 random_no = rand() % N3 + 1; 26 printf("20248395%04d\n", random_no); 27 } 28 29 cnt++; 30 } 31 32 return 0; 33 }1、在计科人数中随机生成一个0-79的数,随后再+N1得到该生的学号 2、在奇安信人数中随机生成一个0-20的数,随后再+1得到该生的学号 3、随机点名。。。 TASK 2
1 // 一元二次方程求解 2 3 #include <stdio.h> 4 #include <math.h> 5 6 int main() { 7 double a, b, c; 8 double delta, p1, p2; // 用于保存中间计算结果 9 10 while(scanf("%lf%lf%lf", &a, &b, &c) != EOF) { 11 if(a == 0) { 12 printf("a = 0, invalid input\n"); 13 continue; 14 } 15 16 delta = b*b - 4*a*c; 17 p1 = -b/2/a; 18 p2 = sqrt(fabs(delta))/2/a; 19 20 if(delta == 0) 21 printf("x1 = x2 = %.2g\n", p1); 22 else if(delta > 0) 23 printf("x1 = %.2g, x2 = %.2g\n", p1+p2, p1-p2); 24 else { 25 printf("x1 = %.2g + %.2gi, ", p1, p2); 26 printf("x2 = %.2g - %.2gi\n", p1, p2); 27 } 28 } 29 30 return 0; 31 }
TASK 3
1 #include<stdio.h> 2 int main() 3 { 4 char color; 5 while(scanf("%c",&color)!=EOF) 6 { 7 getchar(); 8 9 if(color == 'r') 10 printf("stop!\n"); 11 12 else if(color == 'g') 13 printf("go go go\n"); 14 15 else if(color == 'y') 16 printf("wait a minute\n"); 17 18 else 19 printf("something must be wrong\n"); 20 } 21 22 return 0; 23 }
TASK 4
TASK 5
1 #include<stdio.h> 2 #include<math.h> 3 int main() 4 { 5 int a,b,c; 6 7 while(scanf("%d%d%d",&a,&b,&c)!=EOF) 8 { 9 if(a+b<=c||b+c<=a||c+a<=b) 10 printf("不能构成三角形\n"); 11 else if(a==b&&b==c) 12 printf("等边三角形\n"); 13 else if(a*a+b*b==c*c||b*b+c*c==a*a||c*c+a*a==b*b) 14 printf("直角三角形\n"); 15 else if((a==b&&a!=c)||(a==c&&a!=b)||(b==c&&b!=a)) 16 printf("等腰三角形\n"); 17 else 18 printf("普通三角形\n"); 19 } 20 return 0; 21 }
TASK 6
标签:%.,int,random,p1,实验,printf,include From: https://www.cnblogs.com/Florence11/p/18455478