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Input an unsigned integer value using scanf() in C

Here, we are going to learn how to input an unsigned integer values using scanf() function in C programming language?
Submitted by IncludeHelp, on September 12, 2018

Here, we have to declare an unsigned integer variable and read its value using scanf() function in C.

The data type to declare an unsigned integer is: unsigned int and the format specifier that is used with scanf() and print() for unsigned int type of variable is "%u".

Program:

#include <stdio.h>

int main(void) 
{
	unsigned int value;

	printf("Enter an unsigned int value: ");
	scanf("%u", &value);
	printf("value: %u\n", value);

	//input again 
	printf("Enter an unsigned int value again: ");
	scanf("%u", &value);
	printf("value: %u\n", value);

	//input again
	printf("Enter an unsigned int value again: ");
	scanf("%u", &value);
	printf("value: %u\n", value);

	return 0;
}

Output

Enter an unsigned int value: 123712
value: 123712
Enter an unsigned int value again: -1
value: 4294967295
Enter an unsigned int value again: 25501
value: 25501

Note: See the input second and its result, when we provide -1 to an unsigned integer value, it assigns "maximum value to an unsigned int" to the variable.






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