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Can someone explain what the purpose of the program below is? #include<stdio.h> #include<string.h> main() { FILE*fp;...

Can someone explain what the purpose of the program below is?

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

main()
{ FILE*fp;
int i; char s[40];
fp=fopen("text.txt","r");
for(i=0;i<100;i++) fprintf(fp,"%c",'a');
fprintf(fp, "\n");

for(i=0;i<100;i++) fprintf(fp, "%c", 'b');
fprintf(fp, "\n");

for(i=0;i<100;i++) fprintf(fp, "%c", 'c');
fprintf(fp, "\n");

fgets(s,10,fp);
printf("%s\n",s);
fgets(s,40,fp);
printf("%s\n",s);
fgets(s,40,fp);
printf("%s\n",s);

fgets(s,40,fp);
printf("%s\n",s);

fclose(fp);
}

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Homework Answers

Answer #1

fp=fopen("text.txt","r");

This is use to open the file in read mode

/*---------------------------------------------------*/

for(i=0;i<100;i++) fprintf(fp,"%c",'a');
fprintf(fp, "\n");

This is use to write a character (upto 100) in file

/*---------------------------------------------------*/

fgets(s,10,fp);
printf("%s\n",s);

This is use to get 10 character from file and store in "s" char array anb print them

fclose(fp);

This is use to close the FILE

So Basically program is used to write character in FILE and read some of character from them and print it

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