C Programming Questions and Answers

What will be the output of the program if the array begins at address 65486?

#include < stdio.h >int main()
{
    int arr[] = {12, 14, 15, 23, 45};
    printf("%u, %u\n", arr, &arr);
    return0;
}

What will be the output of the program if the array begins 1200 in memory?

#include < stdio.h >int main()
{
    int arr[]={2, 3, 4, 1, 6};
    printf("%u, %u, %u\n", arr, &arr[0], &arr);
    return0;
}

Which of the following is correct way to define the function fun() in the below program?

#includeint main()
{
    int a[3][4];
    fun(a);
    return0;
}

Which of the following statements are correct about an array?
1: The array int num[26]; can store 26 elements.
2: The expression num[1] designates the very first element in the array.
3: It is necessary to initialize the array at the time of declaration.
4: The declaration num[SIZE] is allowed if SIZE is a macro.

Point out the error in the program?

#include < stdio.h >#include < stdlib.h >int main()
{
    unsignedchar;
    FILE *fp;
    fp=fopen("trial", "r");
    if(!fp)
    {
        printf("Unable to open file");
        exit(1);
    }
    fclose(fp);
    return0;
}

Point out the error in the program?

#include < stdio.h >/* Assume there is a file called 'file.c' in c:\tc directory. */int main()
{
    FILE *fp;
    fp=fopen("c:\tc\file.c", "r");    
    if(!fp) 
      printf("Unable to open file.");        

    fclose(fp);
    return0;
}

Point out the error/warning in the program?

#include < stdio.h >int main()
{
    unsignedchar ch;
    FILE *fp;
    fp=fopen("trial", "r");
    while((ch = getc(fp))!=EOF)
        printf("%c", ch);
    fclose(fp);
    return0;
}

Point out the correct statements about the program?

#includeint main()
{
    FILE *fptr;
    char str[80];
    fptr = fopen("f1.dat", "w");
    if(fptr == NULL)
        printf("Cannot open file");
    else
    {
        while(strlen(gets(str))>0)
        {
            fputs(str, fptr);
            fputs("\n", fptr);
        }
        fclose(fptr);
    }
    return0;
}

What is x in the following program?

#include < stdio . h >int main()
{
    typedefchar (*(*arrfptr[3])())[10];
    arrfptr x;
    return0;
}

What will be the output of the program?

#includetypedefstruct error {int warning, err, exception;} ERROR;
int main()
{
    ERROR e;
    e.err=1;
    printf("%d\n", e.err);
    return0;
}