Question

ab Ass Part 1 sing Static Arra Do this part on your own. Write a program named lab11 a.c containing the following function: preconditions arc is terminated by dest is big enough hold arc postconditions dest contains src and is terminated by "10" void my strcpy (char dest const char srclj) This function will take two character arrays as parameters. The function should use a loop to copy the contents of src from start to 'V0' into dest. It should also copy the 'V0' into dest. This function will fail if dest isn't big enough to hold src, but there's really no easy wayfor us to check for that, so we'll have to assume that the user uses our function properly.) In main define two character arrays strl and str2 oflength 3l. Prompt the user for a string and use scanf to read the string into the first character amay, strl Then use my strcpy to copy the string from strl into the other char array, str2. Now copy "You entered into strl using your my strepy function. Use printf As is n", strl str2) to print both /a.out. Enter a string of length at most 30: Hello World You entered Hello Your program's should be consistent with the example above. Do this part on your own. Write a program named lab11 b.c containing the following function: preconditions src is terminated by 'Vo dest is big enough hold are postconditions dest contains src and is terminated by '10 void my stropy (char dest, const char src) This funct ion will take two character pointers as parameters. The funct should use a loop to copy the contents of src from start to 'V0 into dest. It should also copy the "10" into dest. Note that incrementing a pointer makes it point to the next memory location. In main define two character pointers strl and str2 and an integer. Prompt the user for string length use the IO the examples below) and use scanf to store this in your int variable. Use malloc for calloc whichever one your prefer) to allocate memory for both character pointers with the length (plus one) read from the user Make sure that malloc (or calloc returned non-NULL addresses for both character pointers. Then prompt the user for a string (use the lo in the examples below) using scanf to read the string into the first pointer, strl Then, as in Part I, use my strepy to copy the string from strl into the other char pointer, str2. Now copy You entered into strl using your my strcpy O function. Use print f is\n", strl str2) to print both strings. After you complete these steps, then free the memory pointed by strl and str2 to prevent memory leaks. Calendar To Do Notifications Courses

Need help writing this lab. Directions in lab attachment above. Thank you. Output should look like ones in attachment

Answer 1

Here is the code for lab1:

#include <stdio.h>
//preconditions: src is terminated by '\0'
//               dest is big enough to hold src
//postconditions: dest contains src and is terminated by '\0'
void my_strcpy(char dest[], const char src[])
{
    int i = 0;
    while(src[i] != '\0')
    {
       dest[i] = src[i];
       i++;
    }  
    dest[i] = src[i];  
}
int main()
{
    char str1[31], str2[31];
    printf("Enter a string of length at most 30: ");
    scanf("%s", str1);
    my_strcpy(str2, str1);
    my_strcpy(str1, "You entered:");
    printf("%s %s\n", str1, str2);
}

Here is the code for lab2:

#include <stdio.h>
#include <stdlib.h>
//preconditions: src is terminated by '\0'
//               dest is big enough to hold src
//postconditions: dest contains src and is terminated by '\0'
void my_strcpy(char *dest, char *src)
{
    int i = 0;
    while(*(src + i) != '\0')
    {
       *(dest + i) = *(src + i);
       i++;
    }
    *(dest + i) = *(src + i);
}
int main()
{
    char *str1, *str2;
    int size;
    printf("What is the longest length of a string that you will enter? ");
    scanf("%d", &size);
    str1 = malloc(size + 1);
    str2 = malloc(size + 1);
    if(str1 == NULL || str2 == NULL)
    {
       printf("malloc failed to allocate enough memory!\n");
       return 0;
    }
    printf("Enter a string: ");
    scanf("%s", str1);
    my_strcpy(str2, str1);
    my_strcpy(str1, "You entered:");
    printf("%s %s\n", str1, str2);
}

And the output screenshot is: