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- #include<stdio.h>
- #include<string.h>
- int rek(char niza[],int d)//7
- {
- static int i=0;
- if(i==d)
- printf("%s",niza);
- if(niza[i]>='A'&&niza[i]<='Z')
- {
- niza[i]+=32;
- i++;
- rek(niza,d);
- }
- if(niza[i]>='a'&&niza[i]<='z')
- {
- niza[i]-=32;
- i++;
- rek(niza,d);
- }
- else
- {
- i++;
- rek(niza,d);
- }
- }
- int main()
- {
- char niza[100];
- int d;
- gets(niza);
- d=strlen(niza);
- rek(niza,d);
- return 0;
- }
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