#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, April~"; srand(time(0)); for(i = 1; i <= 10; ++i) { line = 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); }
在随机行随机列出现十个“hi,april”,形成动画
task2.1
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=%d\n",p) p = p * n; return p; }
task2.2
#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; i += m + 1; m = i + a + b; return m; }
实验运行结果一致
初始化只进行一次,保留上一次结果
task3
include<stdio.h> long long fun(int n); int main() { int n; long long f; while(scanf("%d",&n) != EOF ) { f = fun(n); printf("n = %d ,f = %lld\n",n,f); } return 0; } long long fun(int n) { long long result; if(n==0) result=0; else result= 2*fun(n-1)+1; return result; }
task4
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 comb(int n){ int i,p=1; for(i=1;i<=n;i++) p=p*i; return p; } int func(int n,int m){ int a,b,c; a=comb(n-1)/(comb(m)*comb(n-1-m)); b=comb(n-1)/(comb(m-1)*comb(n-1-m+1)); c=a+b; }
task5.1
#include <stdio.h> #include<stdlib.h> double mypow(int x, int y); int main() { int x, y; double ans; while(scanf("%d%d", &x, &y) != EOF) { ans = mypow(x, y); printf("%d的%d次方: %g\n\n", x, y, ans); } return 0; } double mypow(int x,int y) {int i;double sum=1.0; for(i=1;i<=abs(y);i++) { sum*=x; } if (y>=0) return sum; else return (1/sum); }
task5.2
#include <stdio.h> #include<stdlib.h> double mypow(int x, int y); int main() { int x, y; double ans; while(scanf("%d%d", &x, &y) != EOF) { ans = mypow(x, y); printf("%d的%d次方: %g\n\n", x, y, ans); } system("pause"); return 0; } double mypow(int x, int y) { if (y==0) return 1; else if(y>0) return x*mypow(x,--y); else return 1.0/x*mypow(x,++y); }
task6
#include <stdio.h> int h(int m); void hanoi(unsigned n, char from, char temp, char to); void moveplate(unsigned n, char from ,char to); int main() { unsigned n; int s; while(scanf("%u", &n) != EOF) { hanoi(n, 'A', 'B', 'C'); printf("一共移动盘子的次数:%ld",h(n)); } 0; } void hanoi(unsigned 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 n, char from, char to) { printf("第%u个盘子: %c --> %c\n", n, from, to); } int h(int m) { int s; if(m==1) s=1; else s=2*h(m-1)+1; return s; }
task7
#include<stdio.h> #include<math.h> #define N 20 int is_prime(int n); int main() { int m,i,a,b; { for(m=4;m<=N;m+=2) { for(i=2;i<=m;i++) { if(is_prime(i)&&is_prime(m-i)) {a=i;b=m-i;break;} } printf("%d = %d + %d \n",m,a,b); } } return 0; } int is_prime(int n) { int j,k, Flag=1; k=sqrt(n); if(n==2) return Flag=1; else for(j=2;j<=k;j++) { if((n%j)==0) {Flag=0; break;} } return Flag; }
task8
#include<stdio.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 a,b,c,d; b=0;d=0; while(s) { a=s%10; s/=10; if(a%2) {b=b*10+a;} } while(b) { c=b%10; b/=10; d=d*10+c; } return d; }
标签:return,int,long,char,shiyan3,printf,include From: https://www.cnblogs.com/ctayy/p/17292782.html