aptitude 命令_C-命令行參數Aptitude問題與解答

aptitude 命令

C programming Command Line Arguments Aptitude Questions and Answers: In this section you will find C Aptitude Questions and Answers on Command Line Arguments – Passing values with running programs, separate argument values, number of arguments etc.

C編程命令行參數能力問題和解答：在本節中，您將找到命令行參數的C能力問題和解答-通過運行程序傳遞值，單獨的參數值，參數數目等。

1) What will be the output of this program (prg_1.c)? If input command is
C:\TC\BIN>prg_1 includehelp.com C C++ Java

#include <stdio.h>
int main(int argc,char* argv[])
{
printf("%d",argc);
return 0;
}

Answer

Correct Answer - 2
5
The first argument of main argc contains the total number of arguments given by command prompt including command name, in this command total arguments are 5.

1)該程序(prg_1.c)的輸出是什么？ 如果輸入命令是
C：\ TC \ BIN> prg_1 includehelp.com C C ++ Java

回答

正確答案-2
5
main argc的第一個參數包含命令提示符給出的參數總數，包括命令名稱，在此命令中，參數總數為5。

2) What will be the output of this program (prg_2.c)? If input command is
C:\TC\BIN>prg_2 1,2 "Ok" "Hii" Hello , AAA

#include <stdio.h>
int main(int counter,char** arg)
{
unsigned char tally;
for(tally=0;tally< counter; tally+=1)
printf("%s|",arg[tally]);
return 0;
}

C:\TC\BIN\PRG_2.EXE|1,2|Ok|Hii|Hello|,|AAA|
ERROR: Invalid argument list.
C:\TC\BIN\PRG_2.EXE|1|,|2|Ok|Hii|Hello|,|AAA|
1,2|Ok|Hii|Hello|,|AAA|

Answer

Correct Answer - 1
C:\TC\BIN\PRG_2.EXE|1,2|Ok|Hii|Hello|,|AAA|

2)該程序(prg_2.c)的輸出是什么？ 如果輸入命令是
C：\ TC \ BIN> prg_2 1,2“確定”“ Hii”您好，AAA

C：\ TC \ BIN \ PRG_2.EXE | 1,2 |確定| Hii |你好|，| AAA |
錯誤：無效的參數列表。
C：\ TC \ BIN \ PRG_2.EXE | 1 |，| 2 | OK | Hii | Hello |，| AAA |
1,2 |確定| Hii |你好|，| AAA |

回答

正確答案-1
C：\ TC \ BIN \ PRG_2.EXE | 1,2 |確定| Hii |你好|，| AAA |

3) Which is the correct form to declare main with command line arguments ?
You can choose more than answers.

int main(int argc, char argv[]){ }
int main(int argc, char* argv[]){ }
int main(int argc, char** argv){ }
int main(int* argc, char* argv[]){ }

Answer

Correct Answer - 2 and 3
int main(int argc, char* argv[]){ } and int main(int argc, char** argv){ }

3)用命令行參數聲明main的正確格式是什么？
您可以選擇多個答案。

int main(int argc，char argv []){}
int main(int argc，char * argv []){}
int main(int argc，char ** argv){}
int main(int * argc，char * argv []){}

回答

正確答案-2和3
int main(int argc，char * argv []){}和int main(int argc，char ** argv){}

4) What will be the output of this program (prg_2.c)? If input command is
C:\TC\BIN>prg_2 Include Help .Com

#include <stdio.h>
int main(int argc,char** arg)
{
printf("%s",arg[argc]);
return 0;
}

(null)
.Com
Help
C:\TC\BIN>prg_2.exe

Answer

Correct Answer - 1
(null)
argc contains the total number of arguments passed through command prompt, in this program value of argc will be 3, and the given arguments will store into arg[] from 0 to 2 index.
So arg[argc] => arg[3] will return null.

4)該程序(prg_2.c)的輸出是什么？ 如果輸入命令是
C：\ TC \ BIN> prg_2包括幫助.Com

(空值)
.Com
救命
C：\ TC \ BIN> prg_2.exe

回答

正確答案-1
(空值)
argc包含通過命令提示符傳遞的參數總數，在此程序中argc的值為3，并且給定參數將從0到2索引存儲到arg []中 。
因此arg [argc] => arg [3]將返回null。

5) What will be the output of this program (prg_2.c)? If input command is
C:\TC\BIN>prg_3 10 20 30

#include <stdio.h>
#include <stdlib.h>
int main(int argc,char* argv[])
{
int answer;
answer=atoi(argv[1])+atoi(argv[2]);
printf("%d",answer);
return 0;
}

Answer

Correct Answer - 4
30
1^st, 2^nd argument of argv are 10 and 20.

5)該程序(prg_2.c)的輸出是什么？ 如果輸入命令是
C：\ TC \ BIN> prg_3 10 20 30

回答

正確答案-4
30
argv的^1st ， ^2nd參數是10和20。

翻譯自: https://www.includehelp.com/c-programs/c-command-line-argument-aptitude-questions-and-answers.aspx

aptitude 命令

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