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#include <stdio.h>

int Swap(int number)

{

int a, b;

a = number % 10;

b = number / 10;

return 10 * a + b;

}

int main()

{

int number;

printf("Enter a two-digit number:\n");

scanf_s("%d", &number);

printf("First :%d\n", number);

printf("Then %d\n", Swap(number));

system("pause");

return 0;

}