Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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I need to convert this code from C to C++
![int main()
{
char number[2000];
FILE *fptr;
if ((fptr = fopen("datafile1.txt","r")) == NULL)
{
printf("Error! opening file");
// Program exits if the file pointer returns NULL.
return(1);
}
if (fgets(number,2000,fptr) != NULL)
fclose(fptr);
printf("\n File before sorting is \n\n %s \n\n", number);
printf("Frequencies are as follows:\n\n");
char temp;
int i, j;
int n= strlen(number);
freqCount(number, n);
return 0;
}](https://content.bartleby.com/qna-images/question/c45a61cd-259f-4034-96ab-adfb5c1cf9d8/01262a49-7962-405a-bd09-f287ce0b6be2/tma3o4_processed.png)
Transcribed Image Text:int main()
{
char number[2000];
FILE *fptr;
if ((fptr = fopen("datafile1.txt","r")) == NULL)
{
printf("Error! opening file");
// Program exits if the file pointer returns NULL.
return(1);
}
if (fgets(number,2000,fptr) != NULL)
fclose(fptr);
printf("\n File before sorting is \n\n %s \n\n", number);
printf("Frequencies are as follows:\n\n");
char temp;
int i, j;
int n= strlen(number);
freqCount(number, n);
return 0;
}
![//sort datafile1 frequency
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*function prints frequency of list*/
void freqCount(char list[], int size){
int freq[size];
int count, j, i = 0;
for(i=0; i<size; i++){
freq[i]= -1;
//count frequencies
for(j=0; j<size; j++){
//count each number at least once
count = 1;
for(i=j+1; i<size; i++){
//compare values
if(list[j] == list[i]){
count++;
//if repeated set repeated numbers' freq to 0
freq[i]=0;
}
}
//store each frequency once
//if freqlj]!=0 then that number hasn't been recorded yet
if(freqlj) != 0}{
freq[j]=count;
}
}
//print freqs
for(j=0; j<size; j++){
if(freqlj]!=0){
printf(""%c' is repeated %d times. \n\n", list[j],freq[j]);
return;](https://content.bartleby.com/qna-images/question/c45a61cd-259f-4034-96ab-adfb5c1cf9d8/01262a49-7962-405a-bd09-f287ce0b6be2/wugvv54_processed.png)
Transcribed Image Text://sort datafile1 frequency
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*function prints frequency of list*/
void freqCount(char list[], int size){
int freq[size];
int count, j, i = 0;
for(i=0; i<size; i++){
freq[i]= -1;
//count frequencies
for(j=0; j<size; j++){
//count each number at least once
count = 1;
for(i=j+1; i<size; i++){
//compare values
if(list[j] == list[i]){
count++;
//if repeated set repeated numbers' freq to 0
freq[i]=0;
}
}
//store each frequency once
//if freqlj]!=0 then that number hasn't been recorded yet
if(freqlj) != 0}{
freq[j]=count;
}
}
//print freqs
for(j=0; j<size; j++){
if(freqlj]!=0){
printf(""%c' is repeated %d times. \n\n", list[j],freq[j]);
return;
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