File Input Output MCQs

Which pre-defined function returns a pointer to the last occurence of a character in a string?

Select the correct value of i from given options i=scanf("%d %d", &a, &b);

What error will generate if the read and write parameters are not separated by commas?

gets() and puts() operate on . . . . . . . .

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    char str[11] = "hello";
    char *str1 = "world";
    strcat(str, str1);
    printf("%s %d", str, str[10]);
}

Only . . . . . . . . character of pushback is guaranteed per file when ungetc is used.

Which of the following statements about stdout and stderr are true?

What is the meaning of the following C statement?

printf(“%10s”, state);

What will be the output of the following C code?

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