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File Input Output- C Programming MCQ Questions and Answers

Learn competitive and Technical Aptitude C programming mcq questions and answers on File I/O with easy and logical explanations. Page-8 section-2

Each section contains 100 MCQs on File Input Output .
71
Which of the following doesn't require an & for the input in scanf()?
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Answer & Solution
Answer: Option A
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72
For floating point numbers, the precision flag specifies the number of decimal places to be printed. When no precision modifier is specified, printf() prints . . . . . . . .
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Answer & Solution
Answer: Option A
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73
Which of the following is the correct syntax for calling function ungetc?
Assume int c and FILE *fp
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Answer & Solution
Answer: Option B
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74
Which of the following cannot be used with ungetc()?
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Answer & Solution
Answer: Option D
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75
Which character of pushback is guaranteed per file?
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Answer & Solution
Answer: Option A
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76
If the user enters 1 s 3.2, what value will be returned by the scanf()?
scanf("%d %f %c", &a, &b, &c);
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Answer & Solution
Answer: Option A
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77
String operation such as strcat(s, t), strcmp(s, t), strcpy(s, t) and strlen(s) heavily rely upon.
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Answer & Solution
Answer: Option A
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78
What will be the output of the following C code?
#include <stdio.h>
int main()
{
    char str[10] = "hello";
    char *p = strrchr(str, 'l');
    printf("%c\n", *(++p));
}
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Answer & Solution
Answer: Option B
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79
Which function will return the current file position for stream?
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Answer: Option C
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80
When a C program is started, O.S environment is responsible for opening file and providing pointer for that file?
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Answer & Solution
Answer: Option D
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