四、实验任务
实验任务1
1.
#include<stdio.h> long long fun(int x); int main(){ int n; long long f; while(scanf("%d",&n)!=EOF){ f=fun(n); printf("n=%d,f=%11d\n",n,f); } return 0; } long long fun(int x) { long long k; if (x==1) k=1; else k=2*fun(x-1)+1; return k; }
虽然但是,我觉得他的运行截图不能是这个,但我实在找不到问题出在哪里了.....同样的代码,手机上就可以,一到电脑就诈胡
实验任务2
1.
#include <stdio.h> long long fac(int n); // 函数声明 int main() { int i,n; printf("Enter n:\n "); scanf("%d", &n); for(i=1; i<=n; ++i) printf("%d! = %lld\n", i, fac(i)); return 0; } // 函数定义 long long fac(int n) { static long long p = 1; p = p*n; return p; }
long long fac(int n); // 函数声明 int main() { int i,n; printf("Enter n:\n "); scanf("%d", &n); for(i=1; i<=n; ++i) printf("%d! = %lld\n", i, fac(i)); return 0; } // 函数定义 long long fac(int n) { static long long p = 1; printf("p=%11d\n",p); p = p*n; return p; }
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); }
实验任务3
1.
#include <stdio.h> #include <stdlib.h> #define N 1000 int fun(int n,int m,int bb[N]) { int i,j,k=0,flag; for(j=n;j<=m;j++) { flag=1; for(i=2;i<j;i++) if(j%i==0) { flag=0; break; } if(flag==1) bb[k++]=j; } return k; } int main(){ int n=0,m=0,i,k,bb[N]; scanf("%d",&n); scanf("%d",&m); for(i=0;i<m-n;i++) bb[i]=0; k=fun(n,m,bb); for(i=0;i<k;i++) printf("%4d",bb[i]); return 0; }
2.
实验任务4
1.
#include <stdio.h> void dec2n(int x, int n); int main() { int x; printf("输入一个十进制整数: "); scanf("%d", &x); dec2n(x, 2); dec2n(x, 8); dec2n(x, 16); return 0; } void dec2n(int x, int n) { int i = 0, a[32],b[32],c[32]; char t; //转化为二进制 if(n==2){ while (x > 0) { a[i] = x % 2; i = i + 1; x = x / 2; } for (i--; i >= 0; i--) printf("%d", a[i]); printf("\n"); } //转化为八进制 else if(n==8){ while (x > 0) { b[i] = x % 8; i = i + 1; x = x / 8; } for (i--; i >= 0; i--) printf("%d", b[i]); printf("\n"); } //转化为十六进制 else if (n==16){ while (x > 0) { c[i] = x % 16; i = i + 1; x = x / 16; } for (i--; i >= 0; i--){ if(c[i]>=10){ t = 'A'+c[i]-10; printf("%c",t); } else printf("%d", c[i]); } printf("\n"); } }
2.
emmmmm总的来说这次问题挺多的,包括但不限于,实验1的问题,实验2的运行截图和文件中有点出入,以及实验4课上听了之后没记太清楚,又问了好久别人加之“借鉴”才得出来的巴拉巴拉~