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C Programming What does the below code segment do? #define RECORD_LENGTH 60 /* PORTFOLIO.DAT looks like the below: ibm 108.77 27.98 att 111.43 50 acdc 100 30 */   void main(void) { FILE *fptr; char stock_price_shares[RECORD_LENGTH + 1]; int i=0, count=0; // attempt to open PORTFOLIO.DAT for reading   if ((fptr = fopen("PORTFOLIO.DAT", "r")) == NULL) printf("\nCannot open the file: PORTFOLIO.DAT\n"); else { while ( fgets(stock_price_shares, RECORD_LENGTH + 1, fptr) != NULL ) printf("\n%s", stock_price_shares); fclose(fptr); //close the file }   printf("\nHow many new records for PORTFOLIO.DAT?"); scanf("%d ", &count); fptr = fopen("PORTFOLIO. DAT", "w"); /* writing */ for (i = 0; i < count; ++i) { gets(stock_price_shares); fputs(stock_price_shares, fptr); fclose(fptr); } }

C Programming What does the below code segment do? #define RECORD_LENGTH 60 /* PORTFOLIO.DAT looks like the below: ibm 108.77 27.98 att 111.43 50 acdc 100 30 */   void main(void) { FILE *fptr; char stock_price_shares[RECORD_LENGTH + 1]; int i=0, count=0; // attempt to open PORTFOLIO.DAT for reading   if ((fptr = fopen("PORTFOLIO.DAT", "r")) == NULL) printf("\nCannot open the file: PORTFOLIO.DAT\n"); else { while ( fgets(stock_price_shares, RECORD_LENGTH + 1, fptr) != NULL ) printf("\n%s", stock_price_shares); fclose(fptr); //close the file }   printf("\nHow many new records for PORTFOLIO.DAT?"); scanf("%d ", &count); fptr = fopen("PORTFOLIO. DAT", "w"); /* writing */ for (i = 0; i < count; ++i) { gets(stock_price_shares); fputs(stock_price_shares, fptr); fclose(fptr); } }

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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C Programming

What does the below code segment do?

#define RECORD_LENGTH 60

/*

PORTFOLIO.DAT looks like the below:

ibm 108.77 27.98

att 111.43 50

acdc 100 30

*/

 

void main(void)

{

FILE *fptr;

char stock_price_shares[RECORD_LENGTH + 1];

int i=0, count=0;

// attempt to open PORTFOLIO.DAT for reading

 

if ((fptr = fopen("PORTFOLIO.DAT", "r")) == NULL)

printf("\nCannot open the file: PORTFOLIO.DAT\n");

else {

while ( fgets(stock_price_shares, RECORD_LENGTH + 1, fptr) != NULL )

printf("\n%s", stock_price_shares);

fclose(fptr); //close the file

}

 

printf("\nHow many new records for PORTFOLIO.DAT?");

scanf("%d ", &count);

fptr = fopen("PORTFOLIO. DAT", "w"); /* writing */

for (i = 0; i < count; ++i) {

gets(stock_price_shares);

fputs(stock_price_shares, fptr);

fclose(fptr);

}

}

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