C Exercises: Read the file and count the number of lines
C File Handling : Exercise-5 with Solution
Write a program in C to Find the Number of Lines in a Text File.
Sample Solution:
C Code:
#include <stdio.h>
#define FSIZE 100
int main()
{
FILE *fptr;
int ctr = 0;
char fname[FSIZE];
char c;
printf("\n\n Read the file and count the number of lines :\n");
printf("--------------------------------------------------\n");
printf(" Input the file name to be opened : ");
scanf("%s",fname);
fptr = fopen(fname, "r");
if (fptr == NULL)
{
printf("Could not open file %s", fname);
return 0;
}
// Extract characters from file and store in character c
for (c = getc(fptr); c != EOF; c = getc(fptr))
if (c == '\n') // Increment count if this character is newline
ctr = ctr + 1;
fclose(fptr);
printf(" The lines in the file %s are : %d \n \n", fname, ctr-1);
return 0;
}
Sample Output:
Read the file and count the number of lines : -------------------------------------------------- Input the file name to be opened : test.txt The lines in the file test.txt are : 4
Flowchart:
C Programming Code Editor:
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Next: Write a program in C to find the content of the file and number of lines in a Text File.
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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