C&C++ programming tricky questions


       1.  C++ program to calculate the sum of the digits of a number until the number is
            a single digit
            Example:
Input: Enter a number: 147
Output: 3
Explanation: 147 → 1+4+7 = 12 → 1+2 = 3

2. C program to print message (Hello World/Hello C) without using any semicolon in program
   3. C program to print your name 10 times without using any loop or goto statement



Solutions:
1.#include <iostream.h>
Void main()
{
            int number = 147;
            int result;
if(number)
                        result = number % 9 == 0 ? 9 : number % 9 ;
            else
                        result = 0;
            cout<< result;
            return 0;
}
2.
#include <stdio.h>
Void  main()
{
if(printf("Hello world "))
{
}
}

3. #include<stdio.h>

void main() {
   static int i = 1;
   if (i <= 10) {
      printf("%d", i++);
      main();
   }
}

Comments

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