Input octal value using scanf() in C

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mahmoud2506

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2022-05-04

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Input octal value using scanf() in C

C programming, exam questions, C programming exam-questions,

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mahmoud2506

2022-05-04

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Program:

#include <stdio.h>

int main(void)
{
	unsigned int value;

	printf("Input octal value: ");
	scanf("%o", &value);
	printf("value in octal format: %o\n", value);
	printf("value in decimal format: %d\n", value);

	//testing with invalid value
	printf("Input octal value: ");
	scanf("%o", &value);
	printf("value in octal format: %o\n", value);
	printf("value in decimal format: %d\n", value);

	return 0;
}

Output

Input octal value: 127
value in octal format: 127
value in decimal format: 87
Input octal value: 1278
value in octal format: 127
value in decimal format: 87

Explanation:

See the second input and its result, the input value is 1278 and the accepted value is 127 because 8 is not a valid octal digit. Octal numbers have only 8 digits which are 0, 1, 2, 3, 4, 5, 6 and 7.

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