#include <stdio.h>
#include <stdlib.h>
int main() {
FILE inputFile, outputFile;
char line[1000];
// Open the input file in read mode
inputFile = fopen("input.txt", "r");
if (inputFile == NULL) {
perror("Error opening input file");
return 1;
}
// Open the output file in write mode
outputFile = fopen("output.txt", "w");
if (outputFile == NULL) {
perror("Error opening output file");
fclose(inputFile);
return 1;
}
// Loop through each line in the input file
int lineNumber = 0;
while (fgets(line, sizeof(line), inputFile)) {
// Increment the line number
lineNumber++;
// Check if the line number is within the desired range (e.g., 5 to 10)
if (lineNumber >= 5 && lineNumber <= 10) {
// Use sed to remove the first 10 characters from each line
system("echo \"$line\" | sed 's/^..........//' >> output.txt");
}
}
// Close the input and output files
fclose(inputFile);
fclose(outputFile);
return 0;
}