Solution of 1234 number problem with C,, in Uri Online Judge

Problem link :
   
                https://www.urionlinejudge.com.br/judge/en/problems/view/1234

Solution :


   #include <stdio.h>

 #include <string.h>




int main()

{

    char str[1000],str1[1000];

    int i,j,k,l,n,m;

    while(gets(str) != NULL)

    {

        k = strlen(str);

        n=0;

        for (i=0;i<k;i++)

        {

           if(str[i] != ' ')

           {

               n++;

               if(n%2 != 0)

               {

                   if(str[i]>='a' && str[i]<= 'z')

                    str[i] = str[i] - 32;

                   else

                    str[i] = str[i];

               }

               else

               {

                    if(str[i]>='A' && str[i]<= 'Z')

                    str[i] = str[i] + 32;

                   else

                    str[i] = str[i];

               }

           }

        }

        printf("%s\n",str);

    }

}