Decimal to Binary Display
Hard
C
Control Flow
27 views
Problem Statement
Take a decimal number from the user (validation: positive integer only). Then convert it to binary and print it, also showing the step-by-step conversion process.
Input Format
A single positive integer entered by the user.
Output Format
The binary equivalent of the number, along with the step-by-step conversion process.
Example
13
Binary: 1101
Constraints
• Input must be a positive integer
• Decimal number ≥ 1
• Decimal number ≥ 1
Concept Explanation
Decimal to binary conversion is done by repeatedly dividing the number by 2 and noting the remainders.
Step-by-Step Explanation
1.Read the number from the user.
2.Check validation:
• If the number is less than or equal to 0, stop and show invalid input.
3. Initialize an empty list (or string) to store remainders.
4. While the number is greater than 0:
• Divide the number by 2.
• Store the remainder (number % 2).
• Update the number to the quotient (number / 2).
5.The remainders collected are in reverse order.
6.Reverse the stored remainders.
7.Print the reversed sequence as the binary number.
2.Check validation:
• If the number is less than or equal to 0, stop and show invalid input.
3. Initialize an empty list (or string) to store remainders.
4. While the number is greater than 0:
• Divide the number by 2.
• Store the remainder (number % 2).
• Update the number to the quotient (number / 2).
5.The remainders collected are in reverse order.
6.Reverse the stored remainders.
7.Print the reversed sequence as the binary number.
Concept Explanation
Decimal to binary conversion is done by repeatedly dividing the number by 2 and noting the remainders.
Step-by-Step Explanation
1.Read the number from the user.
2.Check validation:
• If the number is less than or equal to 0, stop and show invalid input.
3. Initialize an empty list (or string) to store remainders.
4. While the number is greater than 0:
• Divide the number by 2.
• Store the remainder (number % 2).
• Update the number to the quotient (number / 2).
5.The remainders collected are in reverse order.
6.Reverse the stored remainders.
7.Print the reversed sequence as the binary number.
2.Check validation:
• If the number is less than or equal to 0, stop and show invalid input.
3. Initialize an empty list (or string) to store remainders.
4. While the number is greater than 0:
• Divide the number by 2.
• Store the remainder (number % 2).
• Update the number to the quotient (number / 2).
5.The remainders collected are in reverse order.
6.Reverse the stored remainders.
7.Print the reversed sequence as the binary number.
Input / Output Format
Input Format
A single positive integer entered by the user.
Output Format
The binary equivalent of the number, along with the step-by-step conversion process.
Constraints
• Input must be a positive integer
• Decimal number ≥ 1
• Decimal number ≥ 1
Examples
Input:
13
Output:
Binary: 1101
Example Solution (Public)
#include <stdio.h>
int main() {
int num, temp;
int binary[32];
int i = 0;
/* ---- Input & Validation ---- */
while (1) {
printf("Enter a positive integer: ");
if (scanf("%d", &num) != 1) {
printf("Invalid input! Please enter an integer.n");
while (getchar() != 'n'); // clear buffer
continue;
}
if (num <= 0) {
printf("Invalid input! Enter a positive integer only.n");
} else {
break;
}
}
/* ---- Conversion Process ---- */
temp = num;
printf("nStep-by-step conversion (Decimal to Binary):n");
printf("QuotienttRemaindern");
while (temp > 0) {
binary[i] = temp % 2;
printf("%dtt%dn", temp / 2, binary[i]);
temp = temp / 2;
i++;
}
/* ---- Print Binary ---- */
printf("nBinary equivalent of %d is: ", num);
for (int j = i - 1; j >= 0; j--) {
printf("%d", binary[j]);
}
printf("n");
return 0;
}
Official Solution Code
#include <stdio.h>
int main() {
int num, temp;
int binary[32];
int i = 0;
/* ---- Input & Validation ---- */
while (1) {
printf("Enter a positive integer: ");
if (scanf("%d", &num) != 1) {
printf("Invalid input! Please enter an integer.n");
while (getchar() != 'n'); // clear buffer
continue;
}
if (num <= 0) {
printf("Invalid input! Enter a positive integer only.n");
} else {
break;
}
}
/* ---- Conversion Process ---- */
temp = num;
printf("nStep-by-step conversion (Decimal to Binary):n");
printf("QuotienttRemaindern");
while (temp > 0) {
binary[i] = temp % 2;
printf("%dtt%dn", temp / 2, binary[i]);
temp = temp / 2;
i++;
}
/* ---- Print Binary ---- */
printf("nBinary equivalent of %d is: ", num);
for (int j = i - 1; j >= 0; j--) {
printf("%d", binary[j]);
}
printf("n");
return 0;
}
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