a=input('请输入任意数字:') print (a.isnumeric()) 运行上述程序,如果从键盘输入4.4,那么输出的结果都是A.NoneB.TrueC.Fa
一、直接使用if-else语句 int num; scanf(“%d”,&num) if(num==1) { printf(“you input is 1\n”); } else printf(“you input is another\n”); 上面的代码表示,如果num=1,输出you input is 1。如果不是,输出you input is another。 这是最基本的选择语句。if或者else条件后面只有一条语句时,...
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C语言实现如下：include<stdio.h>#include<math.h>#include<stdlib.h>void main(){int n,i,b=1;scanf("%d",&n);if (n==1) {printf("1既不是质数，也不是合数\n");exit(0);}for(i=2;i<=(int)sqrt(n);i++){if (n%i==0) {b=0;break;}}if (b) printf("%d是质数\n"...
#include<stdio.h>intmain(){int a=0,n;printf("Input a number:\n");scanf("%d",&n);while(n--){printf("%d ",a++*2);}return0;} 打印: 代码语言:javascript 复制 Input a number:10024681012141618 此时,只要n不等于0,循环会一直进行。
fgetws() — Get a wide-character string fileno() — Get the file descriptor from an open stream finite() — Determine the infinity classification of a floating-point number __flbf() — Determine if a stream is line buffered fldata() — Retrieve file information flocate() — Locat...
本题要求编写程序,输出一个短句“Programming in C is fun!”。 输入格式: 本题目没有输入。 输出格式: 在一行中输出短句“Programming in C is fun!”。 代码: 代码语言:javascript 复制 #include<stdio.h> int main() { printf("Programming in C is fun!\n"); } 2、练习2-3 输出倒三角图案 本题...
if(n%i==0){flag=0;break;/*有一数能整除就不是素数,不再循环*/}if(flag)printf("%disaprimenumber.\n",n);elseprintf("%disnotaprimenumber.\n",n);}运行结果:Inputanumber:35↙35isnotaprimenumber.说明:(1)在程序的开始处利用了do-while循环语句来处理读键盘过程,这是为了保证所读入的数据是一...
= SQL_SUCCESS) \ { \ HandleDiagnosticRecord (h, ht, rc); \ } \if(rc == SQL_ERROR) \ { \ fwprintf(stderr,L"Error in "L#xL"\n"); \ goto Exit; \ } \ }/***//* Structure to store information about *//* a column. /***/typedefstructSTR_BINDING{SQLSMALLINT cDisplay...