Crack MCQ

1.What is the output of the program given below?

#include <stdio.h>
#include <stdlib.h>
void main ()
{
    char str[]="1352468";
    int index=0;
    while(str[index]!='\0')
    {
            printf("%c",str[index]+1);
            index++;
    }
}

 a) 2463579

 b) 1352469

2.What will be the output of the following program?

#include <stdio.h>
#include <stdlib.h>
int main()
{
    char str[]="birds";
    printf("%s",strrev(str));
}

a) sdrib

b) sdrb