Question

Write a function definition for a function my_strcmp() with the following header:

Write/Implement a function definition for a function my_strcmp () with the following header: int my_strcmp (const char *s1, const char *s2) This function compares the string pointed to by s1 to the string pointed to by s2. If the string pointed to by s1 comes before the string pointed to by s2 in dictionary ordering, then -1 is returned. If the string pointed to by s1 is the same as the string pointed to by s2, then 0 is returned (the compare function is case sensitive). Otherwise 1 is returned.

Answer 1

Here is the screenshot of the code.

HomeworkLib2.c () -gedit @ -- (M) (100%) Fri Sep 8 2017 4:02:36 AM manoj Open Save #include«stdio.h> 2 #include«string.h> 3 #include«stdlib.h> 4 5 int my_strcmp (const char *sl, const char *s2) 7int i; //declaring a variable //looping while both 8 for(jze; s1 [1] !="10' &&s2 [1] !='10' ;l++) 10 12 the strings don't exhaust. ǐ.e till one of them reaches null if(s1[1]=s2 [i]) //if both the characters are same, continuing in the loop continue; else //if both the characters in the string at indexi are different,breaking out of loop break; 14 15 16įf (s 1 [1]-s2 [1]) //if both the characters are same at index 1,returning e 18 else if(s1[ǐ] 19 2Θ else return Θ; return -1; return 1; s2[i]) //if the character in sl[i] s2[i], that means si come s 1st in dictionary. Hence, returning -1 < //if the character in sl[i] > s2[i], that means s2 comes 1st in dictionary. Hence, returning 1 23 24 int main() A 25 26 char *p,*q; 27 printf( "Enter string1:) 28 p (char *)malloc (100); 29 q=(char *)malloc (100);1 scanf("%s" , p) ; 31 getchar(); 32 printf("Enter string 2:") 33 scanf("%s", q); 34 printf("%d\n" ,my-strcmp (p.q) ) ; | | 35 return Θ; C Tab Width: 8 Ln 29, Col 23 INS

Note: Main() method is also provided, so that you can test your code against sample input.

Below is the screenshot of the program's output for some sample inputs.

Terminal @ -- M) (100%) Fri Sep 8 2017 4:06:56 AM manoj manoj@manoj:$ gcc HomeworkLib2.c manoj@manoj/a.out Enter string1 manoj Enter string 2: manoj manoj@manoj:-$-/a.out Enter string 1 manoj Enter string 2 Manoj manoj@manoj$ /a.out Enter string 1: Manoj Enter string 2 manoj manoj@manoj: /a.out Enter string 1 mano Enter string 2 manoj manoj@manoj$ /a.out Enter string 1 manoj Enter string 2 mand manoj@manoj$ /a.out Enter string 1 manoj Enter string 2: MANOJ manoj@manoj:$ ./a.out Enter string 2 manoj manoj@manoj:-| Enter string 1 MANOJ
Note that the compare function case senstive from the inputs and outputs shown in the screenshot