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a) What is the benefit of the statement temp = number ; for the program? What will happen if we eliminate it and use the variable number instead of temp in the inner while loop? Hint: Run the program with this modification and check the result!

a) What is the benefit of the statement temp = number ; for the program? What will happen if we eliminate it and use the variable number instead of temp in the inner while loop? Hint: Run the program with this modification and check the result!

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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#include <stdio.h> #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 == reverse){ printf("%d is a palindrome number! \n\n", number); fprintf(outfile , "\t Palindrome\n" ); else{ printf("%d is not a palindrome number! \n\n", number); fprintf(outfile , "\t Non-Palindrome\n" ); //read another number from the file status = fscanf(infile , "%d" , &number); //close the files fclose(infile); fclose(outfile); return 0;
Transcribed Image Text:#include <stdio.h> #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 == reverse){ printf("%d is a palindrome number! \n\n", number); fprintf(outfile , "\t Palindrome\n" ); else{ printf("%d is not a palindrome number! \n\n", number); fprintf(outfile , "\t Non-Palindrome\n" ); //read another number from the file status = fscanf(infile , "%d" , &number); //close the files fclose(infile); fclose(outfile); return 0;
a) What is the benefit of the statement temp = number; for the program? What will happen if we eliminate it and use the variable number instead of temp in the inner while loop? Hint: Run the program with this modification and check the result! b) What is the purpose of the statement reverse = 0; in the program? What will happen if we didn't put it before the inner while loop? Hint: Run the program without this this statement and check the result!
Transcribed Image Text:a) What is the benefit of the statement temp = number; for the program? What will happen if we eliminate it and use the variable number instead of temp in the inner while loop? Hint: Run the program with this modification and check the result! b) What is the purpose of the statement reverse = 0; in the program? What will happen if we didn't put it before the inner while loop? Hint: Run the program without this this statement and check the result!
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