Command Line Arguments

What will be the output of the program (sample.c) given below if it is executed from the command line (turbo c under DOS)?
cmd> sample Good Morning

/* sample.c */
#include<stdio.h>

int main(int argc, char *argv[])
{
    printf("%d %s", argc, argv[1]);
    return 0;
}

A:

3 Good

B:

2 Good

C:

Good Morning

D:

3 Morning

Answer: A

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What will be the output of the program (sample.c) given below if it is executed from the command line (Turbo C in DOS)?
cmd> sample 1 2 3

/* sample.c */
#include<stdio.h>

int main(int argc, char *argv[])
{
    int j;
    j = argv[1] + argv[2] + argv[3];
    printf("%d", j);
    return 0;
}

A:

6

B:

sample 6

C:

Error

D:

Garbage value

Answer: C

Here argv[1], argv[2] and argv[3] are string type. We have to convert the string to integer type before perform arithmetic operation.

Example: j = atoi(argv[1]) + atoi(argv[2]) + atoi(argv[3]);

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What will be the output of the program (myprog.c) given below if it is executed from the command line?
cmd> myprog one two three

/* myprog.c */
#include<stdio.h>
#include<stdlib.h>

int main(int argc, char **argv)
{
    printf("%s\n", *++argv);
    return 0;
}

A:

myprog

B:

one

C:

two

D:

three

Answer: B

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What will be the output of the program (myprog.c) given below if it is executed from the command line?
cmd> myprog one two three

/* myprog.c */
#include<stdio.h>

int main(int argc, char **argv)
{
    printf("%c\n", **++argv);
    return 0;
}

A:

myprog one two three

B:

myprog one

C:

o

D:

two

Answer: C

No answer description is available. Let's discuss.

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What do the 'c' and 'v' in argv stands for?

A:

'c' means argument control 'v' means argument vector

B:

'c' means argument count 'v' means argument vertex

C:

'c' means argument count 'v' means argument vector

D:

'c' means argument configuration 'v' means argument visibility

Answer: C

No answer description is available. Let's discuss.

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Questions for: Command Line Arguments