Answer Posted / vadivelt

First provide an input string, which will be saved in a file.
Then provide a word to be searched. So that it will return
the occurance of a given word in the file.

Here am creating a file and writting the data, and performing
search operation. But if you want to find a word in already
existing file please comment the functions fopen(), gets() and
fclose() which are used in write mode ie., "w+". And give the
file path in fopen() which is used in read mode.

Code here.,

#include<stdio.h>
#include<conio.h>

main()
{
FILE *fp;
/*Here ch = 'a' assignment is done only just to enter the
while loop for the 1st time*/
char ch = 'a', *p1, *dupP1, *dupP2, *src, *dupSrc, *pmain;
int count = 0;

pmain = (char *)malloc(1000);
fp = fopen("vel.txt", "w+");

if(pmain != '\0' && fp != '\0')
{
printf("ENTER THE STRING TO BE WRITTEN IN FILE\n");
pmain = gets(pmain);
fputs(pmain, fp);
}

src = (char *)malloc(20);
if(src != '\0')
{
printf("\nENTER THE STRING TO BE SEARCHED IN THE FILE\n");
gets(src);
}

p1 = (char *)malloc(100);
dupP2 = dupP1 = p1;
dupSrc = src;

fclose(fp);

fp = fopen("vel.txt", "r");
while(ch != EOF)
{
ch = fgetc(fp);
if(ch != ' ' && ch != '\n' && ch != EOF)
{
*(dupP1++) = ch;
}
else
{
*dupP1 = '\0';
while(*dupSrc != '\0' && *dupP2 != '\0')
{
if((*dupSrc == *dupP2) )
{
if((*(dupSrc + 1) == '\0'
&& *(dupP2 + 1) == '\0'))
{
count++;
}
}
else
{
break;
}
dupP2++;
dupSrc++;
}
dupP2 = dupP1 = p1;
dupSrc = src;
}
}
printf("\nIN '%d' PLACE(S) THE STRING '%s' AVAILABLE IN \
THE FILE\n", count, src);

fclose(fp);

getch();
}

pgm to find number of words starting with capital letters in a file(additional memory usage not allowed)(if a word starting with capital also next letter in word is capital cann't be counted twice)

2319

---

What is memcpy() function?

1099

---

The file stdio.h, what does it contain?

1144

---

Explain what is wrong with this program statement?

1105

---

Is it acceptable to declare/define a variable in a c header?

1099

---

What is difference between Structure and Unions?

1237

---

What happens if you free a pointer twice?

1053

---

Do you know pointer in c?

1029

---

Why do we need a structure?

1021

---

What is the difference between abs() and fabs() functions?

1104

---

What's the best way of making my program efficient?

1080

---

What is structure of c program?

1139

---

Sir,please help me out with the code of this question. Write an interactive C program that will encode or decode multiple lines of text. Store the encoded text within a data file, so that it can be retrieved and decoded at any time. The program should include the following features: (a) Enter text from the keyboard, encode the text and store the encoded text in a data file. (b) Retrieve the encoded text and display it in its encoded form. (c) Retrieve the encoded text, decode it and then display the decoded text. (d) End the computation. Test the program using several lines of text of your choice.

2289

---

What are data structures in c and how to use them?

1153

---

What is meant by keywords in c?

1063

---