task1
#include <stdio.h> #include <stdlib.h> #include <time.h> #include <windows.h> #define N 80 void print_text(int line, int col, char text[]); void print_spaces(int n); void print_blank_lines(int n); int main() { int line, col, i; char text[N] = "hi, November~"; srand(time(0)); for(i = 1; i <= 10; ++i) { ine = rand() % 25; col = rand() % 80; print_text(line, col, text); sleep(1000); } return 0; } void print_spaces(int n) { int i; for(i = 1; i <= n; ++i) printf(" "); } void print_blank_lines(int n) { int i; for(i = 1; i <= n; ++i) printf("\n"); } void print_text(int line, int col, char text[]) { print_blank_lines(line-1); print_spaces(col-1); printf("%s", text); }
通过系统时间生成随机数,决定打印文本的几行几列
task2
#include <stdio.h> long long fac(int n); int main() { int i,n; printf("Enter n:"); scanf("%d", &n); for (i = 1; i <= n; ++i) printf("%d! = %lld\n", i, fac(i)); return 0; } long long fac(int n) { static long long p = 1; printf("p=%lld\n",p); p = p * n; return p; }
task2
#include <stdio.h> int func(int, int); int main() { int k = 4, m = 1, p1, p2; p1 = func(k, m); p2 = func(k, m); printf("%d, %d\n", p1, p2); return 0; } int func(int a, int b) { static int m = 0, i = 2; static是静态变量,再次进入函数时,使用上次的结果,变量始终存在。 i += m + 1; m = i + a + b; return m; }
#include <stdio.h> long long func(int n); int main() { int n; long long f; while (scanf("%d", &n) != EOF) { f = func(n); printf("n = %d, f = %lld\n", n, f); } return 0; } long long func(int n){ long long f; if(n==0) f=0; else f=2*func(n-1)+1; return f; }
#include <stdio.h> int func(int n, int m); int main() { int n, m; while(scanf("%d%d", &n, &m) != EOF) printf("n = %d, m = %d, ans = %d\n", n, m, func(n, m)); return 0; } int func(int n, int m){ int ans; if(n<m) ans=0; else if(n>=m) { if(m==0) ans=1; else ans=func(n-1,m)+func(n-1,m-1); } return ans; }
#include <stdio.h> int mul(int n, int m); int main() { int n, m; while(scanf("%d%d", &n, &m) != EOF) printf("%d * %d = %d\n", n, m, mul(n, m)); return 0; } int mul(int n,int m) { int result; if(n*m==0) result=0; else result=mul(n-1,m)+m; return result; }
#include<stdio.h> #include<stdlib.h> #include<math.h> void hanoi(unsigned int n,char from,char temp,char to); void moveplate(unsigned int n,char from,char to); int main() { unsigned int n; int count; while(scanf("%u",&n)!=EOF){ hanoi(n,'A','B','C'); count=pow(2,n)-1; printf("一共移动了%d次",count); printf("\n"); } system("pause"); return 0; } void hanoi(unsigned int n,char from,char temp,char to) { if(n==1) moveplate(n,from,to); else { hanoi(n-1,from,to,temp); moveplate(n,from,to); hanoi(n-1,temp,from,to); } } void moveplate(unsigned int n,char from,char to) { printf("%u: %c --> %c\n",n,from,to); }
#include<stdlib.h> #include<math.h> int is_prime(int a); int main() { int n=0; int m=0; int a; for(n=4;n<=20;n+=2) { for(a=2;a<=n/2;a++){ if(is_prime(a)&&is_prime(n-a)) { printf("%d=%d+%d",n,a,n-a); printf("\n"); } } } return 0; } int is_prime(int a) { if(a==2) { return 1; } int j=0; for(j=2;j<=sqrt(a);j++) { if(a%j==0) { return 0; } } return 1; }
#include <stdio.h> #include<math.h> long fun(long s); int main() { long s, t; printf("Enter a number: "); while (scanf("%ld", &s) != EOF) { t = fun(s); printf("new number is: %ld\n\n", t); printf("Enter a number: "); } return 0; } long fun(long s) { int j; int i = 0; int count = 0; while (s) { j= s % 10;//得到一个尾数 if (j% 2 != 0) { i += j * pow(10, count) ; count++; } s = s / 10; } return i; }
标签:int,long,char,实验,func,printf,include From: https://www.cnblogs.com/pansiqi/p/16849986.html