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- int n,zbir; //se naveduvaat
- cin>>n; //se vnesuva n
- zbir=0; //zbir = 0 za pochetna vrednost
- for(int i=1;i<=n;i++) { //dodek i<=n kje se povtoruva toa dole, sekoe povtoruvanje i++, a i definirano da pochne od 1
- if(i%2==0) zbir=zbir-i; //ako i e paren, kje se odzeme od zbirot
- else zbir=zbir+i; //ako e neparen kje se dodade
- } //toa e za 1-2+3-4+5... parnite se so - neparnite so +
- cout<<zbir; //se pechati zbir
- //i ondak to.
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