Answer Posted / satish

using FILE concept we can achieve this

main()
{
FILE *fp;
FILE *fp1;
char ch;
int c=0;
clrscr();
fp=fopen("c:\cc.txt","r");
fp1=fopen("abc.txt","w");
if(fp==NULL)
{
printf("\n source file opening error");
//exit(1);
}
else if(fp1==NULL)
{
printf("\n target file opening error");
//exit(1);
}
while(!feof(fp))
{
ch=fgetc(fp);
fputc(ch,fp1);
c++;
}
fclose(fp1);
fclose(fp);
fp1=fopen("abc.txt","r");
while(!feof(fp1))
{
ch=fgetc(fp1);
//fprintf(fp1,"%c",ch);

printf("%c",ch);
}
fclose(fp1);
printf("\n %d bytes copied",c);
c=fcloseall();
printf("\n%d files closed",c);
getch();
}

c language supports bitwise operations, why a) 'c' language is system oriented b) 'c' language is problem oriented c) 'c' language is middle level language d) all the above

1060

---

How many types of sorting are there in c?

1062

---

Which built-in library function can be used to match a patter from the string?

1308

---

explain what are pointers?

1023

---

c programs are converted into machine language with the help of a) an interpreter b) a compiler c) an operatinf system d) none of the above

1274

---

Differentiate between a for loop and a while loop? What are it uses?

1193

---

What are multidimensional arrays?

1126

---

What is the size of empty structure in c?

1091

---

Is null a keyword in c?

1201

---

Disadvantages of C language.

1113

---

Write a function which takes as parameters one regular expression(only ? and * are the special characters) and a string and returns whether the string matched the regular expression.

1108

---

Is return a keyword in c?

1096

---

What are pointers? What are stacks and queues?

1161

---

What is structure data type in c?

1035

---

Explain the use of keyword 'register' with respect to variables.

1063

---