File Input Output MCQs

What will be the output of the following C code?

#include <stdio.h>
#include <ctype.h>
int main()
{
    int i = 0;
    if (isspace(i))
        printf("space\n");
    else
        printf("not space\n");
        return 0;
}

fputs() function writes a string to a file that only ends with a newline.

. . . . . . . . removes the named file, so that a subsequent attempt to open it will fail.

Escape sequences are prefixed with . . . . . . . .

What is the default return-type of getchar()?

Choose the correct description for control string %-+7.2f.

What will be the output of the following C code?

#include <stdio.h>
#include <ctype.h>
int main()
{
    char c = 't';
    printf("is :%c\n", tolower('A'));
}

ungetc() is used . . . . . . . .

Which mathematical function among the following does NOT require int parameters?