Maths magic

Find out the value of "?"

Simple C and C++ logic

///.....Simple Logic...///

#include<stdio.h>

int main()

{

            int arr[1]={10};

            printf("%d\n", 0[arr]);

            return 0;

} 

C Logic

Find OutPut :

int main()

{

            int a[5] = {5, 1, 15, 20, 25};

            int i, j, m;

            i = ++a[1];

            j = a[1]++;

            m = a[i++];

            printf("%d, %d, %d", i, j, m);

            return 0

}

C Pointer

What will be the output?

#include<stdio.h>

int main()

{

            char *names[] = { "Syam", "soorya", "arun", "Baiju", "jino"};

            int i;

            char *t;

            t = names[3];

            names[3] = names[4];

            names[4] = t;

            for(i=0; i<=4; i++)

                        printf("%s,", names[i]);

            return 0;

}

C Aptitudes

What will be the output of the program?  

#include<stdio.h>

#include<string.h>

int main()

{

            char str1[20] = "Hello", str2[20] = " World";

            printf("%s\n", strcpy(str2, strcat(str1, str2)));

            return 0;

}