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C Exercises: Find the content of the file and number of lines in a Text File

C File Handling : Exercise-6 with Solution

Write a program in C to find the content of the file and number of lines in a Text File.

Sample Solution:

C Code:

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

#define LSIZ 128 
#define RSIZ 10 

int main(void) 
{
    char line[RSIZ][LSIZ];
	char fname[20];
    FILE *fptr = NULL; 
    int i = 0;
    int tot = 0;
    printf("\n\n Find the content of the file and number of lines in a Text File :\n");
	printf("----------------------------------------------------------------------\n"); 
	printf(" Input the file name to be opened : ");
	scanf("%s",fname);	

    fptr = fopen(fname, "r");
/*--------------------- store the lines into an array ----------------*/	
    while(fgets(line[i], LSIZ, fptr)) 
	{
        line[i][strlen(line[i]) - 1] = '\0';
        i++;
    }
    tot = i;
	printf("\n The content of the file %s  are : \n",fname);    
    for(i = 0; i < tot; ++i)
    {
        printf(" %s\n", line[i]);
    }
/*---------------------------------------------------------------------*/	
    printf("\n The lines in the file are : %d\n",tot-1);
    printf("\n");
	
    return 0;
}

Sample Output:

 Find the content of the file and number of lines in a Text File :                                            
----------------------------------------------------------------------                                        
 Input the file name to be opened : test.txt                                                                  
                                                                                                              
 The content of the file test.txt  are :                                                                      
                                                                                                              
 test line 1                                                                                                  
 test line 2                                                                                                  
 test line 3                                                                                                  
 test line 4                                                                                                  
                                                                                                              
 The lines in the file are : 4  

Flowchart:

Flowchart: Find the content of the file and number of lines in a Text File

C Programming Code Editor:

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C Programming: Tips of the Day

Difference between signed / unsigned char :

There's no dedicated "character type" in C language. char is an integer type, same (in that regard) as int, short and other integer types. char just happens to be the smallest integer type. So, just like any other integer type, it can be signed or unsigned.

It is true that (as the name suggests) char is mostly intended to be used to represent characters. But characters in C are represented by their integer "codes", so there's nothing unusual in the fact that an integer type char is used to serve that purpose.

The only general difference between char and other integer types is that plain char is not synonymous with signed char, while with other integer types the signed modifier is optional/implied.

Ref : https://bit.ly/3esiVjT