Free Test Input/Output functions – C Language

Q1: Which function is used to print output to the console in C?

A. printf() B. scanf() C. puts() D. gets()

Q2: Which header file is required for printf() and scanf() functions?

A. <stdio.h> B. <stdlib.h> C. <string.h> D. <conio.h>

Q3: Which function is used to read a single character from the console?

A. getchar() B. scanf() C. gets() D. fgets()

Q4: Which function is used to write a single character to the console?

A. putchar() B. printf() C. puts() D. fputc()

Q5: Which function is used to read a string from the console?

A. gets() B. scanf() C. fgets() D. getchar()

Q6: What is the safer alternative to gets()?

A. fgets() B. scanf() C. getchar() D. puts()

Q7: Which format specifier is used to print an integer in printf()?

A. %d B. %c C. %f D. %s

Q8: Which format specifier is used to print a floating-point number in printf()?

A. %d B. %c C. %f D. %s

Q9: Which format specifier is used to print a string in printf()?

A. %d B. %s C. %c D. %f

Q10: Which function is used to display a string followed by a newline?

A. puts() B. printf() C. putchar() D. fputs()

Q11: In printf(), what does the format specifier %c represent?

A. Character B. String C. Integer D. Float

Q12: In scanf(), what is the correct format specifier for reading a character?

A. %s B. %c C. %d D. %f

Q13: Which function reads formatted input from stdin?

A. scanf() B. printf() C. gets() D. puts()

Q14: What is the return type of printf() function?

A. int B. void C. char D. float

Q15: What is the return type of scanf() function?

A. int B. void C. char D. float

Q16: Which function is used to read a line from a file or stdin?

A. fgets() B. gets() C. scanf() D. readline()

Q17: Which library function is used to write a string to a file or stdout?

A. fputs() B. puts() C. printf() D. fprintf()

Q18: Which function clears the output buffer and moves the data to the console?

A. fflush(stdout) B. clear() C. flush() D. reset()

Q19: Which function can be used for both formatted output to a file and console?

A. fprintf() B. printf() C. sprintf() D. puts()

Q20: Which function stores formatted output in a string?

A. sprintf() B. printf() C. scanf() D. puts()

Quiz for Input/Output functions