定义浮点点数变量df，输入浮点数 浮点数df扩大100倍 浮点数df增加0.5 利用floor()函数得到最接近df数，但不大于df的整数（完成四舍五入）。不能用int强制转换，否则，数据超过int范围就会出现错误。浮点数df缩小100倍得到有两位小数的浮点数 按%.2f输出结果。参考代码：include <stdio.h>#include <...
include <stdio.h>#include <string.h>int main(){ char s[80],t[80]; int i, sl; printf("\nPlease enter string s:"); scanf("%s", s); sl = strlen(s); /***found***/ for( i=0; i<sl; i+=1) t[i] = s[i]; for (i=0; i<sl...
include <stdio.h> int main(int argc, char *argv[]){ int k,m,n;// 重定向输入流 freopen("data.txt","r",stdin);while(scanf("%d",&k)!=EOF){ for(m=k+1;m<=2*k;m++){ // 判断 km/(m-k) 是整数 if(k*m%(m-k) == 0){ n = k*m/(m-k);printf("1/%d ...
include <stdio.h> int main(void){ int n =0;int k=1;int Sum =1;printf("input the n");scanf("%d",&n);while(n%2==0){ printf("input the n");scanf("%d",&n);} for(int i=0;i<(n/2);i++){ Sum += (k+2);k = k+2;} printf("%d",Sum);} ...
include<stdio.h> include<math.h> void main(){ int i,j,a,b,c,d,e;printf("please input a number:");scanf("%d",&a);b=a;d=1;e=0;i=0,b=0;while(a%2!=0||a<=2){ printf("error.\n");printf("please input a number:");scanf("%d",&a);} for(i=3;i<=a/...
所以请在看源程序之后再输入。运行后会有如下提示：“请输入你的选择及整数n(用逗号来间隔)：”这时可以输入这样的选择：“1,2”，即求2的立方 “2，125”，即求125的立方根 “3”，退出程序*/ include<stdio.h> include<math.h> display();lifang(n);lifanggen(n);main(){ int choice,...
用C编写的程序如下。include "math.h"main(){ long int m, num = 0;printf("\nPlease input num: ");scanf("%ld", &m);num = (3*pow(m,11)+8*pow(m,9)-6*pow(m,6)+5*pow(m,2)+20);printf("\n%ld\n", num);getch();} 参考资料：lengxieyaner 的回答 ...
include<stdio.h> include<stdlib.h> include<math.h> void main(){ int m,i;float k; //改动这 printf ("input a number:");scanf("%d",&m);// k = sqrt(m);k = sqrt(float(m)); //改动这 for (i=2; i <=k;i++)if (m % i==0)break;if (i>k)printf("ye...
#include "stdio.h"#include "string.h"#include<stdlib.h>void main(){ int fun(int a,char password[],char passWord[]); char password[]="123",passWord[10]; int a=3,ch;loop1: ch=fun(a,password,passWord); if(ch==1) printf("输入正确"); if(ch==0) { a--; if(a==0) exit(...
int dirnum;int a,b;c;a=dirnum&0x000f;第四个字节 b=dirnum&0xf000;第一个字节 c=a|b;转换后 第三个和第二个原理一样！第二种方法：int a;char *p=&a;swap(p,p+3)swap(p+1,p+2)再得到a就是了