Question

3. Write a program to read a (binary) file of integers, sort the integers, and write them back to the same file. Assume that all the numbers can be stored in an array. (Exercise 3)

4. Repeat exercise 3, but assume that only 20 numbers can be stored in memory (in an array) at any one time.

Hint: you will need to use at least two additional files for temporary output.

Please finish the question in C language programming, thank you!

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
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// numbers1.txt (input file)

78 43 89 67 75 90 34 97 78  89

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#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

void sort(int nos[],int cnt);
int main() {
FILE *f1;
int cnt=0,i=0,num;

//Opening the intput file in read mode
f1 = fopen("numbers1.txt", "r");
if (f1 == NULL) {
printf("** File not found **");
exit(1);
}
else
       {
           while(fscanf(f1, "%d", &num)!=EOF)
           {
               cnt++;
           }
           fclose(f1);
          
           int nos[cnt];
       f1 = fopen("numbers1.txt", "r");
       for(i=0;i<cnt;i++)
       {
          fscanf(f1, "%d", &nos[i]);
       }  
fclose(f1);
sort(nos,cnt);
  
f1 = fopen("numbers1.txt", "w");
for(i=0;i<cnt;i++)
{
   fprintf(f1,"%d ",nos[i]);
   if((i+1)%10==0)
   fprintf(f1,"\n");
       }
       fclose(f1);
}
   return 0;
  
}
void sort(int array[],int cnt)
{
       //This Logic will Sort the Array of elements in Ascending order
   int temp,i,j;
   for (i = 0; i < cnt; i++)
{
for (j = i + 1; j < cnt; j++)
{
if (array[i] > array[j])
{
temp = array[i];
array[i] = array[j];
array[j] = temp;
}
}
}
}

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// numbers1.txt (output file)

numbers 1 - Notepad File Edit Format View Help 34 43 67 75 78 78 89 89 90 97

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3)

numbers.txt (input file)

143 11 286 37 173 234 -265 -286 85 186
267 266 62 -139 -3 80 -225 10 141 142
166 241 -26 3 -167 76 169 31 -27 167
17 -65 77 -32 13 265 46 245 -261 22

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#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

void sort(int nos[],int cnt);
int main() {
FILE *f1;
const int SIZE=20;
int cnt=0,i=0,num;

//Opening the intput file in read mode
f1 = fopen("numbers.txt", "r");
if (f1 == NULL) {
printf("** File not found **");
exit(1);
}
else
       {
           int nos[SIZE];
           while(fscanf(f1, "%d", &num)!=EOF)
           {
               cnt++;
           }
           fclose(f1);
          
           if(cnt>SIZE)
           {
               cnt=SIZE;
           }
          
       f1 = fopen("numbers.txt", "r");
       for(i=0;i<cnt;i++)
       {
          fscanf(f1, "%d", &nos[i]);
       }  
fclose(f1);
sort(nos,cnt);
  
f1 = fopen("numbers.txt", "w");
for(i=0;i<cnt;i++)
{
   fprintf(f1,"%d ",nos[i]);
   if((i+1)%10==0)
   fprintf(f1,"\n");
       }
       fclose(f1);
}
   return 0;
  
}
void sort(int array[],int cnt)
{
       //This Logic will Sort the Array of elements in Ascending order
   int temp,i,j;
   for (i = 0; i < cnt; i++)
{
for (j = i + 1; j < cnt; j++)
{
if (array[i] > array[j])
{
temp = array[i];
array[i] = array[j];
array[j] = temp;
}
}
}
}

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// numbers.txt (output file)

numbers - Notepad Eile Edit Format View Help -286 -265 -225 -139 -3 10 11 37 62 80 85 141 142 143 173 186 234 266 267 286

_______________Could you plz rate me well.Thank You