Find Number Of Lines In a File

To Find Number of Lines we can Just count how many new line characters ('\n') are there in our file

/*Finding Number of new line characters in a buffer*/
int find_count_of_lines(const char *str){
        int liness=0, i=0;
        for(i=0; str[i] != '\0'; i++){
                if( str[i] == '\n' ){
                        liness+=1;
                }
        }
        return liness;
}
/* Read a File chunk by chunk and sum number of new line character in individual chunks*/
int txt_file_number_of_line(FILE *fp){
        int lines=0;
        char buffer[1024]={0x00};
        size_t bytes=0;
        fseek(fp, 0L, SEEK_SET);
        do{
                memset(buffer, 0x00, sizeof(buffer));
                bytes = fread(buffer, sizeof(char), sizeof(buffer)-1, fp);
                if(bytes > 0){
                        lines += find_count_of_lines(buffer);
                }
        }while(bytes > 0);
        return lines;
}

complete code

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

/*Finding Number of new line characters in a buffer*/
int find_count_of_lines(const char *str){
        int liness=0, i=0;
        for(i=0; str[i] != '\0'; i++){
                if( str[i] == '\n' ){
                        liness+=1;
                }
        }
        return liness;
}
/* Read a File chunk by chunk and sum number of new line character in individual chunks*/
int txt_file_number_of_lines(FILE *fp){
        int lines=0;
        char buffer[1024]={0x00};
        size_t bytes=0;
        fseek(fp, 0L, SEEK_SET);
        do{
                memset(buffer, 0x00, sizeof(buffer));
                bytes = fread(buffer, sizeof(char), sizeof(buffer)-1, fp);
                if(bytes > 0){
                        lines += find_count_of_lines(buffer);
                }
        }while(bytes > 0);
        return lines;
}

int main(int argc, char *argv[]){
        FILE *fp = NULL;
        int number_of_lines = 0;
        if(argc != 2){
                fprintf(stderr, "USAGE: %s <filename>\n", argv[0]);
                return -1;
        }
        fp = fopen(argv[1], "r");
        number_of_lines= txt_file_number_of_lines(fp);
        printf("%s having %d Lines\n", argv[1], number_of_lines);
        fclose(fp);
        return 0;
}

Compiling and Output of Program

rajesh@ideapad:~/Rajesh/Blog/file$ gcc find_lines_count.c
rajesh@ideapad:~/Rajesh/Blog/file$ ./a.out 
USAGE: ./a.out 
rajesh@ideapad:~/Rajesh/Blog/file$ ./a.out find_lines_count.c 
find_lines_count.c having 42 Lines
rajesh@ideapad:~/Rajesh/Blog/file$ wc find_lines_count.c
  42  126 1210 find_lines_count.c