maheswar02.c¶
Metadata¶
| Property | Detail |
|---|---|
| Difficulty | Beginner (index: 2 / 10) |
Concepts¶
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Source Code¶
#include<stdio.h>
#include<stdlib.h>
int main() {
FILE *fIn, *fEven, *fOdd;
int n;
fIn = fopen("input.txt", "r");
fEven = fopen("EVENFile.txt", "w");
fOdd = fopen("ODDFile.txt", "w");
// Check if files opened successfully
if ((fIn == NULL) || (fEven == NULL) || (fOdd == NULL)) {
printf("ERROR : one or more file opening FAILED!");
if (fIn != NULL) fclose(fIn);
if (fEven != NULL) fclose(fEven);
if (fOdd != NULL) fclose(fOdd);
exit(1);
}
// Read numbers and separate them into even and odd files
while (fscanf(fIn, "%d", &n) != EOF)
(n % 2 == 0) ? fprintf(fEven, "%d\n", n) : fprintf(fOdd, "%d\n", n);
// Close all files
fclose(fIn);
fclose(fEven);
fclose(fOdd);
printf("OPERATION COMPLETED SUCCESSFULLY.");
return 0;
}
Explanation¶
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Copy the prompt below and paste it into any AI assistant.
You are explaining a C programming code to a beginner.
STRICT RULES:
- Only use the given code. Do NOT assume anything not present.
- Do NOT add extra examples.
- Keep explanation clear and short.
- If something is unclear, say "Not clear from code".
- Follow the exact format below. Do NOT change headings.
FORMAT:
[START]
## What it does
(Explain the overall purpose in 1-2 sentences)
## Step-by-step
(Explain how the code works in steps, simple language)
## Key Concepts
(List concepts like loop, condition, function, etc.)
## Notes
(Mention any limitations, errors, or assumptions)
[END]
CODE (maheswar02.c):
#include<stdio.h>
#include<stdlib.h>
int main() {
FILE *fIn, *fEven, *fOdd;
int n;
fIn = fopen("input.txt", "r");
fEven = fopen("EVENFile.txt", "w");
fOdd = fopen("ODDFile.txt", "w");
// Check if files opened successfully
if ((fIn == NULL) || (fEven == NULL) || (fOdd == NULL)) {
printf("ERROR : one or more file opening FAILED!");
if (fIn != NULL) fclose(fIn);
if (fEven != NULL) fclose(fEven);
if (fOdd != NULL) fclose(fOdd);
exit(1);
}
// Read numbers and separate them into even and odd files
while (fscanf(fIn, "%d", &n) != EOF)
(n % 2 == 0) ? fprintf(fEven, "%d\n", n) : fprintf(fOdd, "%d\n", n);
// Close all files
fclose(fIn);
fclose(fEven);
fclose(fOdd);
printf("OPERATION COMPLETED SUCCESSFULLY.");
return 0;
}