C Programming · all questions

File Input Output
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

296

Questions

9/15

Page

Pick an option on a question to see the right answer and solution.

Q161

Which one of the following is correct syntax for opening a file.

Select an option to see the answer and solution.

Q162

What will be the output of the following C code (when 4 and 5 are entered)?

#include <stdio.h>
void main()
{
    int m, n;
    printf("enter a number");
    scanf("%d", &n);
    scanf("%d", &m);
    printf("%d\t%d\n", n, m);
}

Select an option to see the answer and solution.

Q163

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int i = 10, j = 3;
    printf("%d %d %d", i, j);
}

Select an option to see the answer and solution.

Q164

What will cos(x) return?

Select an option to see the answer and solution.

Q165

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int n;
    scanf("%d", n);
    printf("%d", n);
}

Select an option to see the answer and solution.

Q166

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    short int i;
    scanf("%h*d", &i);
    printf("%hd", i);
    return 0;
}

Select an option to see the answer and solution.

Q167

Choose the right statement for fscanf() and scanf()

Select an option to see the answer and solution.

Q168

What is the function of the mode ' w+'?

Select an option to see the answer and solution.

Q169

gets() does the following when it reads from stdin.

Select an option to see the answer and solution.

Q170

What is the qualifying input for the type specifier G?

Select an option to see the answer and solution.

Q171

Which of the following doesn't require an & for the input in scanf()?

Select an option to see the answer and solution.

Q172

For floating point numbers, the precision flag specifies the number of decimal places to be printed. When no precision modifier is specified, printf() prints . . . . . . . .

Select an option to see the answer and solution.

Q173

Which of the following is the correct syntax for calling function ungetc?

Assume int c and FILE *fp

Select an option to see the answer and solution.

Q174

Which of the following cannot be used with ungetc()?

Select an option to see the answer and solution.

Q175

Which character of pushback is guaranteed per file?

Select an option to see the answer and solution.

Q176

If the user enters 1 s 3.2, what value will be returned by the scanf()?

scanf("%d %f %c", &a, &b, &c);

Select an option to see the answer and solution.

Q177

String operation such as strcat(s, t), strcmp(s, t), strcpy(s, t) and strlen(s) heavily rely upon.

Select an option to see the answer and solution.

Q178

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));
}

Select an option to see the answer and solution.

Q179

Which function will return the current file position for stream?

Select an option to see the answer and solution.

Q180

When a C program is started, O.S environment is responsible for opening file and providing pointer for that file?

Select an option to see the answer and solution.

Prev 7 8 9 10 11 Next