C Programming - Command Line Arguments

16. 

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

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

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

A. sample 3 2 3
B. sample 1 2 3
C. sample
D. Error

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

17. 

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

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

int main(int argc, char **argv)
{
    int i, j=0;
    for(i=0; i<argc; i++)
        j = j+atoi(argv[i]);
    printf("%d\n", j);
    return 0;
}

A. 123
B. 6
C. Error
D. "123"

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

18. 

What will be the output of the program (sample.c) given below if it is executed from the command line?
cmd> sample friday tuesday sunday

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

int main(int sizeofargv, char *argv[])
{
    while(sizeofargv)
        printf("%s", argv[--sizeofargv]);
    return 0;
}

A. sample friday tuesday sunday
B. sample friday tuesday
C. sunday tuesday friday sample
D. sunday tuesday friday

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

19. 

What will be the output of the program (sample.c) given below if it is executed from the command line?
cmd> sample friday tuesday sunday

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

int main(int argc, char *argv[])
{
    printf("%c", *++argv[2] );
    return 0;
}

A. s
B. f
C. u
D. r

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

20. 

What will be the output of the program (myprog.c) given below if it is executed from the command line?
cmd> myprog 10 20 30

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

int main(int argc, char **argv)
{
    int i;
    for(i=0; i<argc; i++)
        printf("%s\n", argv[i]);
    return 0;
}

A. 10 20 30
B. myprog 10 20
C. myprog 10 20 30
D. 10 20

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.