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Yuki888 [10]
3 years ago
13

Write a program, named sortlist, that reads three to four integers from the command line arguments and returns the sorted list o

f the integers on the standard output screen. You need to use strtok() function to convert a string to a long integer. For instance,
Computers and Technology
1 answer:
yawa3891 [41]3 years ago
7 0

Answer:

In C++:

void sortlist(char nums[],int charlent){    

   int Myarr[charlent];

const char s[4] = " ";  

char* tok;  

tok = strtok(nums, s);  

int i = 0;  

while (tok != 0) {  

 int y = atoi(tok);

 Myarr[i] = y;

 tok = strtok(0, s);  

 i++;

}  

int a;  

for (int i = 0; i < charlent; ++i) {

for (int j = i + 1; j < charlent; ++j) {

 if (Myarr[i] > Myarr[j]) {

  a =  Myarr[i];

  Myarr[i] = Myarr[j];

  Myarr[j] = a;

       }   }  }

 

for(int j = 0;j<charlent;j++){ printf(" %d",Myarr[j]); }  

}

Explanation:

This line defines the sortlist function. It receives chararray and its length as arguments

void sortlist(char nums[],int charlent){    

This declares an array

   int Myarr[len];

This declares a constant char s and also initializes it to space

const char s[4] = " ";  

This declares a token as a char pointer

char* tok;

This line gets the first token from the char

tok = strtok(nums, s);

This initializes variable i to 0

int i = 0;

The following while loop passes converts each token to integer and then passes the tokens to the array  

<em> while (tok != 0) {  </em>

<em>  int y = atoi(tok); </em><em>-> Convert token to integer</em><em> </em>

<em>  Myarr[i] = y; </em><em>-> Pass token to array</em><em> </em>

<em>  tok = strtok(0, s); </em><em>-> Read token</em><em> </em>

<em>  i++; </em>

<em> }  </em>

Next, is to sort the list.

int a;

This iterates through the list  

for (int i = 0; i < charlent; ++i) {

This iterates through every other elements of the list

for (int j = i + 1; j < charlent; ++j) {

This condition checks if the current element is greater than next element

 if (Myarr[i] > Myarr[j]) {

If true, swap both elements

<em>   a =  Myarr[i]; </em>

<em>   Myarr[i] = Myarr[j]; </em>

<em>   Myarr[j] = a; </em>

       }   }  }

The following iteration prints the sorted array

<em>for(int j = 0;j<charlent;j++){ printf(" %d",Myarr[j]); }  </em>

}

<em>See attachment for illustration of how to call the function from main</em>

Download cpp
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