Question

Write a program using C language that

-ask the user to enter their name or any other string (must be able to handle multiple word strings)

- capture the epoch time in seconds and the corresponding nanoseconds

- ask the user to type in again what they entered previously

- capture the epoch time in seconds and the corresponding nanoseconds

-perform the appropriate mathematical calculations to see how long it took in seconds and nanoseconds (should show to 9 decimal places)

- If the strings entered don't match, tell the user, do no calculations and exit the program

Answer 1

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Code:

#include <stdio.h>

#include <time.h>

#include <string.h>

int main()

{

    //variables to store starting and ending time

    time_t start, end;

    //variables to store the string and its duplicate

    char s[50], d[50];

    printf("Enter the string: ");

    //get the original string

    gets(s);

    printf("Enter the string again: ");

    //clock() returns the number of clock ticks elapsed since the program was launched.

    start = clock();

    gets(d);

    end = clock();

    if (strcmp(s, d) == 0)

    {

        //to get the time we divide it by CLOCKS_PER_CYCLE

        double timeElapsed = double(end - start) / double(CLOCKS_PER_SEC);

        //we use %.9lf to print double with 9 decimal places

        printf("Time taken in Seconds: %.9lf\n", timeElapsed);

        printf("Time taken in Nanoseconds: %.9lf\n", timeElapsed * 1000000000);

    }

    else

        printf("The strings do not match");

}

Code Snippet:

Please refer to the code snippet below for the indentation

Output:

#1:

#2: