Standard Input and Output Quiz Online Practice Test

1. Identify the option that doesn't belong to the group:

2. In a standard program, input is usually taken through:

3. What does this command line represent?
prog1|prog2

4. What is the default return value type of the getchar() function?

5. What is the numerical value of EOF?

6. What does the getchar() function do?

7. Which statement is correct?

8. What does putchar() return?

9. Which statement about the tolower function is false?

10. What will be the result of executing the following C code?
#include <stdio.h>
int main()
{
char c = '�';
putchar(c);
}

11. The putchar(c) function always outputs character c to the:

12. What will be the output of the following C code if the specified commands are used to run (considering myfile exists)?
#include <stdio.h>
int main()
{
char c = 'd';
putchar(c);
}

13. What will be the output of the following C code when executed with the specified commands (assuming myfile exists)?
#include <stdio.h>
int main(int argc, char **argv)
{
char c = 'd';
putchar(c);
printf(" %d\n", argc);
}

14. What will be the output of the following C code when executed with the specified commands (if myfile does not exist)?
#include <stdio.h>
int main(int argc, char **argv)
{
char c = 'd';
putchar(c);
printf(" %d\n", argc);
}

15. The command prog < infile results in: