In lecture we have talked about programming “hygiene”. The code below exhibits several problems. Point out as many issues as you can find. int main() { char buf[24]; printf("Enter filename: "); gets(buf); int fd = open(buf,O_RDONLY); read(fd,buf,24); printf("read from file: %s\n",buf); }
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In lecture we have talked about
code below exhibits several problems. Point out as many issues as you can find.
char buf[24];
printf("Enter filename: ");
gets(buf);
int fd = open(buf,O_RDONLY);
read(fd,buf,24);
printf("read from file: %s\n",buf);
}
Step by step
Solved in 4 steps
- The function print_last_line in python takes one parameter, fname, the name of a text file. The function should open the file for reading, read the lines of the file until it reaches the end, print out the last line in the file, report the number of lines contained in the file, and close the file. Hint: Use a for loop to iterate over the lines and accumulate the count. For example: Test Result print_last_line("wordlist1.txt") maudlin The file has 5 lines.This C programming code is not run properly. Please fix this problem and solve this error. # include <stdio.h># include <string.h> int main( ){ // Declare the file pointer FILE *filePointer,*filePointer1 ; int n; printf("enter a key for encryption"); scanf("%d",&n); // Declare the variable for the data to be read from file char dataToBeRead[50]; filePointer = fopen("test.txt", "r") ; filePointer1 = fopen("final.txt", "w") ; // Check if this filePointer is null // which maybe if the file does not exist if ( filePointer == NULL ) { printf( "test.txt file failed to open." ) ; } else { printf("The file is now opened.\n") ; // Read the dataToBeRead from the file // using fgets() method while( fgets ( dataToBeRead, 50, filePointer ) != NULL ) {…#include #includesstdlib.h> int main(void){ int number , reverse = 0, digit , temp; FILE *infile, *outfile; int status; //open the input file and check if an error occurred infile = fopen( "numbers.txt" , "r" ); //open the input file if(infile == NULL){ printf("Error: File \"numbers.txt\" not found!\n"); exit (1); //open the output file and check if error occurred outfile = fopen( "Report.txt" , "w" ); if(outfile == NULL){ printf("Error: File \"Report.txt\" can not be created!\n"); exit (1); status = fscanf(infile , "%d" , &number); //read first number from the file /To read all the numbers in the file while(status != EOF){ printf("%d is read from the file\n" , number); fprintf(outfile , "%8d" , number); //compute the reverse of the number temp = number ; reverse = 0; while(temp != 0){ digit = temp % 10; reverse = reverse * 10 + digit; temp = temp/10; printf("The reverse is: %d \n", reverse); fprintf(outfile , "%8d" , reverse); //check whether the number is palindrome if(number ==…
- Please explain this code given below: #include <stdio.h> #include <stdlib.h> #defineMAX_WORD_LENGTH100 int main() { char word[MAX_WORD_LENGTH]; charinputFileName[100]; char outputFileName[] = "output.txt"; printf("\nEnter input filename: "); scanf("%s", inputFileName); FILE *inputFile = fopen(inputFileName, "r"); FILE *outputFile =fopen(outputFileName,"w"); int spaceEncountered = 0; while(1) { char ch = fgetc(inputFile); if (feof(inputFile)) break; if(ch !='') { fputc(ch, outputFile); spaceEncountered = 0; } elseif(!spaceEncountered) { fputc(ch, outputFile); spaceEncountered = 1; } } printf("%s generated successfully.\n",…USING C++ PLEASE CREATE THREE FILES! IntCollection.h (or IntCollection.hpp): class definition IntCollection.cpp: class implementation main.cpp, including sample output and your answer to question 6 at the bottom. : main program to run the code The following code creates an IntCollection object named ‘c’. It adds seven integers to ‘c’, then uses a for loop to display the seven integers: int main() { IntCollection c; c.add(45); c.add(-210); c.add(77); c.add(2); c.add(-21); c.add(42); c.add(7); for (int i = 0; i < c.getSize(); i++) { cout << c.get(i) << endl; } } For this assignment you will add a copy constructor, a destructor, and three overloaded operators to the IntCollection class. In the design diagram below, the black member functions represent code that has already been implemented. You will be implementing the green items. Each item that you will be adding to the class is described below the diagram. private: int size // the number of ints currently stored in…#include #includecstdlib.h> int main(void){ int number , reverse = 0, digit, temp; FILE *infile, "outfile; int status; //open the input file and check if an error occurred infile = fopen( "numbers.txt" , "r" );//open the input file if(infile == NULL){ printf("Error: File \"numbers.txt\" not foundl\n"); exit (1); //open the output file and check if error occurred outfile = fopen( "Report.txt", "w" ); if(outfile == NULL)X printf("Error: File \"Report.txt\" can not be created!\n"); exit (1); status = fscanf(infile, "%d" , &number); /read first number from the file while(status != EOF){ printf("%d is read from the file\n" , number); fprintf(outfile, "%8d" , number); //To read all the numbers in the file //compute the reverse of the number temp = number ; reverse = 0; while(temp != 0)X digit = temp % 10; reverse = reverse * 10 + digit ; temp = temp/10; printf("The reverse is: %d \n", reverse); fprintf(outfile , "%8d" , reverse); //check whether the number is palindrome if(number ==…
- SUBJECT NAME IS C++: WAP to read 4 student objects and write them into a file, then print total number of student number in file. After that read an integer and print details of student stored at this number in the file using random access and file manipulatorsComputer Science Write a program that uses 3 command line arguments to search a list of float numbers in a file and prints out the result of whether the number was found or not on the console. Also, it prints the array in the reverse order (not sorted but reverse order of how the numbers were read in). The first argument is the name of the input file which has the numbers to be searched, the second is an integer specifying how many numbers are in the input file and the third argument is the float number being searched for. Use dynamic memory allocation for the array and use a function (that returns a boolean value) to do the searching. Also make sure in the beginning of your program, that the program will execute only if exactly three arguments (other than executable name itself) are specified. at the command line.C++ Problem!! Sort A List Of Integers Given a file of 100,000 unsorted integers, write a program that first prompt user to enter file name and reads those integers into an array and sorts the integers in the array. The program should then prompt the user for an index, and then display the integer at that index. For example, if the array contains ten integers and the contents are 79 4 42 51 12 22 33 17 91 10 after sorting, the integer at index 6 is 42 Download the "List of 100,000 Unsorted Integers" from below link and sort that list, then enter the value at index 10000 (ten thousand) for a screenshot. https://1drv.ms/t/s!AuFS4mkcuYyBjHZ_SIudb93bq2uy?e=CsyvZj
- <<Write in Java>> - Challenge 7 File encryption is the science of writing the contents of a file in a secret code. Your encryption program should work like a filter, reading the contents of one file, modifying the data into a code, and then writing the coded contents out to a second file. The second file will be a version of the first file, but written in a secret code. Although there are complex encryption techniques, you should come up with a simple one of your own. For example, you could read the first file one character at a time, and add 10 to the character code of each character before it is written to the second file. - Challenge 8 Write a program that decrypts the file produced by the program in Programming Challenge 7. The decryption program should read the contents of the coded file, restore the data to its original state, and write it to another filearray is stored in an external txt file Programming must be in C language, and not use Break, pass, continue, goto or returnThis is for r Regarding a for loop, which of the following is not true? The for keyword must be followed by parentheses. Following the for statement, the code to be executed is recognized by it being indented. The number of times the loop will be performed is determined by the length of the vector passed to the for keyword. The for loop can contain other for loops.