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Command Line Arguments problems

  • 1. What will be the output of the program if it is executed like below?
    cmd> sample 
    /* sample.c */
#include<stdio.h>

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

  • Options
  • A. 0
  • B. sample
  • C. samp
  • D. No output
    • Discuss
  • 2. 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;
}

  • Options
  • A. myprog
  • B. one
  • C. two
  • D. three
    • Discuss
  • 3. 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;
}

  • Options
  • A. sample friday tuesday sunday
  • B. sample friday tuesday
  • C. sunday tuesday friday sample
  • D. sunday tuesday friday
    • Discuss
  • 4. What will be the output of the program (sample.c) given below if it is executed from the command line?
    cmd> sample "*.c" 
    /* sample.c */
#include<stdio.h>

int main(int argc, int *argv)
{
    int i;
    for(i=1; i<argc; i++)
        printf("%s\n", argv[i]);
    return 0;
}

  • Options
  • A. *.c
  • B. "*.c"
  • C. sample *.c
  • D. List of all files and folders in the current directory
    • Discuss
  • 5. 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);
    return 0;
}

  • Options
  • A. s
  • B. f
  • C. sample
  • D. friday
    • Discuss
  • 6. What will be the output of the program (sample.c) given below if it is executed from the command line?
    cmd> sample one two three 
    /* sample.c */
#include<stdio.h>

int main(int argc, char *argv[])
{
    int i=0;
    i+=strlen(argv[1]);
    while(i>0)
    {
        printf("%c", argv[1][--i]);
    }
    return 0;
}

  • Options
  • A. three two one
  • B. owt
  • C. eno
  • D. eerht
    • Discuss
  • 7. If the following program (myproc.c) is present in the directory "C:\TC" then what will be output of the program if run it from DOS shell? 
    /* myproc.c */
#include<stdio.h>

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

  • Options
  • A. SAMPLE.C
  • B. C:\TC\MYPROC.EXE
  • C. C:\TC
  • D. Error
    • Discuss
  • 8. What will be the output of the program in Turbo C? 
    #include<stdio.h>

int main(int argc, char *argv, char *env[])
{
    int i;
    for(i=1; i<argc; i++)
        printf("%s\n", env[i]);
    return 0;
}

  • Options
  • A. List of all environment variables
  • B. List of all command-line arguments
  • C. count of command-line arguments
  • D. Error: cannot have more than two arguments in main()
    • Discuss
  • 9. 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[])
{
    int i;
    for(i=1; i<argc; i++)
        printf("%c", argv[i][0]);
    return 0;
}

  • Options
  • A. oot
  • B. ott
  • C. nwh
  • D. eoe
    • Discuss
  • 10. 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;
}

  • Options
  • A. 123
  • B. 6
  • C. Error
  • D. "123"
    • Discuss

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