CARD GAME VII

Patrick and Johnny started to play the next card game. In this game, the instructor gave Patrick a card with an integer number x and the game is to invert digits in it. Inverting digit t means replacing it with digit 9 - t. Patrick has to transform the initial number x to the minimum possible positive number by inverting some (possibly, zero) digits. The decimal representation of the final number shouldn't start with a zero.

Can you write a C program to transform the number to the minimum possible positive number using while loop?

Input Format:

The input consists of an integer 'x', which corresponds to the number that instructor gave to Patrick.

Output Format:

Print the minimum possible positive number that Patrick can obtain after inverting some digits. The number shouldn't contain leading zeroes.

[All text in bold corresponds to the input and the rest corresponds to output]

Sample Input and Output 1:

Enter the number

22

The minimum possible positive number is 22

 

Sample Input and Output 2:

Enter the number

8772

The minimum possible positive number is 1222

Program Code:

#include <string.h>

#include <stdio.h>

void change(char *x)

{

    *x =  '0' + 9 - *x + '0';

}

int main()

{

    char num[64];

    printf("Enter the number\n");

    scanf("%s", num);

    if(num[0]!='9' && num[0]>='5')

    change(&num[0]);

    int i=1;

    while(i < strlen(num))

{

if(num[i]>='5')

change(&num[i]);

            ++i;

}

    printf("The minimum possible positive number is ");

    puts(num);

    return 0;

}