250+ TOP MCQs on Command Line Arguments and Answers

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Here is a listing of C Objective Questions on “Command Line Arguments” along with answers, explanations and/or solutions:

1. A program that has no command line arguments will have argc _________
a) Zero
b) Negative
c) One
d) Two
Answer: c
Clarification: None.

2. What is the index of the last argument in command line arguments?
a) argc – 2
b) argc + 1
c) argc
d) argc – 1
Answer: d
Clarification: None.

3. What will be the output of the following C code (if run with no options or arguments)?

```
    #include 
```
```
    int main(int argc, char *argv[])
```
```
    {
```
```
        printf("%dn", argc);
```
```
        return 0;
```
```
    }
```

a) 0
b) 1
c) Depends on the platform
d) Depends on the compiler
Answer: b
Clarification: None.

4. What will be the output of the following C code (run without any command line arguments)?

```
    #include 
```
```
    int main(int argc, char *argv[])
```
```
    {
```
```
        while (argc--)
```
```
        printf("%sn", argv[argc]);
```
```
        return 0;
```
```
    }
```

a) Compile time error
b) Executablefilename
c) Segmentation fault
d) Undefined
Answer: b
Clarification: None.

5. What will be the output of the following C code (run without any command line arguments)?

```
    #include 
```
```
    int main(int argc, char *argv[])
```
```
    {
```
```
        printf("%sn", argv[argc]);
```
```
        return 0;
```
```
    }
```

a) Segmentation fault/code crash
b) Executable file name
c) Depends on the platform
d) Depends on the compiler
Answer: a
Clarification: None.

6. What will be the output of the following C code (run without any command line arguments)?

```
    #include 
```
```
    int main(int argc, char *argv[])
```
```
    {
```
```
        while (*argv++ != NULL)
```
```
        printf("%sn", *argv);
```
```
        return 0;
```
```
    }
```

a) Segmentation fault/code crash
b) Executable file name
c) Depends on the platform
d) Depends on the compiler
Answer: a
Clarification: None.

7. What will be the output of the following C code (run without any command line arguments)?

```
    #include 
```
```
    int main(int argc, char *argv[])
```
```
    {
```
```
        while (*argv  !=  NULL)
```
```
        printf("%sn", *(argv++));
```
```
        return 0;
```
```
    }
```

a) Segmentation fault/code crash
b) Executable file name
c) Depends on the platform
d) Depends on the compiler
Answer: b
Clarification: None.

8. What will be the output of the following C code (run without any command line arguments)?

```
    #include 
```
```
    int main(int argc, char *argv[])
```
```
    {
```
```
        while (argv != NULL)
```
```
        printf("%sn",  *(argv++));
```
```
        return 0;
```
```
    }
```

a) Segmentation fault/code crash
b) Executable file name
c) Depends on the platform
d) Depends on the compiler
Answer: a
Clarification: None.

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250+ TOP MCQs on Command Line Arguments and Answers

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