Integers that can only store non-negative whole numbers are known as unsigned integers. To define an unsigned integer, we use the unsigned keyword. By convention, this is placed before the type.
Code
#include <stdio.h>
int main()
{
unsigned int unsignedInteger;
printf("Enter an unsigned integer: ");
scanf("%u", &unsignedInteger);
printf("You have entered: %u\n", unsignedInteger);
return 0;
}
Output
Enter an unsigned integer: 5
You have entered: 5
To know more about whole numbers, check out:
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