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- #include <iostream>
- #include <fstream>
- using namespace std;
- int numar(int n, int c1, int c2){
- int nr = 0;
- int p = 1;;
- while(n){
- if(n % 10 == c1){
- nr += c2*p;
- p *= 10;
- }
- else{
- nr += n % 10 * p;
- p *= 10;
- }
- n /= 10;
- }
- return nr;
- }
- int main()
- {
- cout << numar(123, 4, 7);
- return 0;
- }
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