1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <time.h> 4 #include <windows.h> 5 #define N 80 6 7 void print_text(int line, int col, char text[]); // 函数声明 8 void print_spaces(int n); // 函数声明 9 void print_blank_lines(int n); // 函数声明 10 11 int main() { 12 int line, col, i; 13 char text[N] = "hi, April~"; 14 15 srand(time(0)); // 以当前系统时间作为随机种子 16 17 for(i = 1; i <= 10; ++i) { 18 line = rand() % 25; 19 col = rand() % 80; 20 print_text(line, col, text); 21 Sleep(1000); // 暂停1000ms 22 } 23 24 return 0; 25 } 26 27 // 打印n个空格 28 void print_spaces(int n) { 29 int i; 30 31 for(i = 1; i <= n; ++i) 32 printf(" "); 33 } 34 35 // 打印n行空白行 36 void print_blank_lines(int n) { 37 int i; 38 39 for(i = 1; i <= n; ++i) 40 printf("\n"); 41 } 42 43 // 在第line行第col列打印一段文本 44 void print_text(int line, int col, char text[]) { 45 print_blank_lines(line-1); // 打印(line-1)行空行 46 print_spaces(col-1); // 打印(col-1)列空格 47 printf("%s", text); // 在第line行、col列输出text中字符串 48 }
程序功能:每间隔1秒随机打印一个“hi,April~” ,并且打印的行和列由函数控制,实现动态输出10个“hi,April~”
task2_1.1
#include <stdio.h> #include<stdlib.h> long long fac(int n); // 函数声明 int main() { int i, n; printf("Enter n: "); scanf("%d", &n); for (i = 1; i <= n; ++i) printf("%d! = %lld\n", i, fac(i)); system("pause"); return 0; } // 函数定义 long long fac(int n) { static long long p = 1; p = p * n; return p; }
task2_1.2
#include <stdio.h> #include<stdlib.h> long long fac(int n); // 函数声明 int main() { int i, n; printf("Enter n: "); scanf("%d", &n); for (i = 1; i <= n; ++i) printf("%d! = %lld\n", i, fac(i)); system("pause"); return 0; } // 函数定义 long long fac(int n) { static long long p = 1; printf("p = %lld\n", p); p = p * n; return p; }
task2_2
#include <stdio.h> #include<stdlib.h> int func(int, int); // 函数声明 int main() { int k = 4, m = 1, p1, p2; p1 = func(k, m); // 函数调用 p2 = func(k, m); // 函数调用 printf("%d, %d\n", p1, p2); system("pause"); return 0; } // 函数定义 int func(int a, int b) { static int m = 0, i = 2; i += m + 1; m = i + a + b; return m; }
task3
#include <stdio.h> #include<stdlib.h> long long func(int n); // 函数声明 int main() { int n; long long f; while (scanf("%d", &n) != EOF) { f = func(n); // 函数调用 printf("n = %d, f = %lld\n", n, f); } system("pause"); return 0; } // 函数定义 long long func(int n) { long long f; if(n == 1){ f = 1; } else { f = 2*func(n-1)+1; } return f; }
task4 迭代方式
#include <stdio.h> #include<stdlib.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)); system("pause"); return 0; } // 函数定义 int func(int m,int n) { int i, s = 1,k = 1; if(m>n) { return 0; } else if(m == 0&&n == 0) { return 1; } else { for(i = 1;i<=m;++i) { s*=n-i+1; k*=i; } return s/k; } }
递归方式
#include <stdio.h> #include<stdlib.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)); system("pause"); return 0; } // 函数定义 int func(int m,int n) { if(m>n) { return 0; } else if(m == n||m == 0) { return 1; } else { int i; i = func(n-1,m)+func(n-1,m-1); return i; } }
task6
#include <stdio.h> #include <math.h> #include<stdlib.h> long func(long s); // 函数声明 int main() { long s, t; printf("Enter a number: "); while (scanf("%ld", &s) != EOF) { t = func(s); // 函数调用 printf("new number is: %ld\n\n", t); printf("Enter a number: "); } system("pause"); return 0; } // 函数定义 long func(long s) { long ans; long digit,t; ans = 0; t = 1; while(s != 0) { digit = s%10; if(digit%2) { ans += t*digit; t *= 10; } s /= 10; } return ans; }
task5
#include <stdio.h> #include <math.h> #include<stdlib.h> void hanoi(unsigned int n,char from,char temp,char to,int *m); void moveplate(unsigned int n, char from,char to,int *m); int main() { unsigned int n; while(scanf("%u",&n)!=EOF) { int m = 0; hanoi(n,'A','B','C',&m); printf("\n一共移动了%d次\n\n",m); } system("pause"); return 0; } void hanoi(unsigned int n,char from,char temp,char to,int *m) { if(n == 1) moveplate(n,from,to,m); else { hanoi(n-1,from,to,temp,m); moveplate(n,from,to,m); hanoi(n-1,from,temp,to,m); } } void moveplate(unsigned int n,char from,char to,int *m) { printf("%u:%c-->%c\n",n,from,to); (*m)++; }
标签:return,函数,int,编程,long,C语言,char,func,include From: https://www.cnblogs.com/ichd/p/18162536