read multiple lines from file in c

#include <stdio.h> int main(int argc, char* argv[]) { char const* const fileName = argv[1]; /* should check that argc > 1 */ FILE* file = fopen(fileName, "r"); /* should check the result */ char line[256]; while (fgets(line, sizeof(line), file)) { /* note that fgets don't strip the terminating \n, checking its presence would allow to handle lines longer that sizeof(line) */ printf("%s", line); } /* may check feof here to make a difference between eof and io failure -- network timeout for instance */ fclose(file); return 0; }

how to count lines in a file c

/* C Program to count the Number of Lines in a Text File  */
#include <stdio.h> 
#define MAX_FILE_NAME 100 
  
int main() 
{ 
    FILE *fp; 
    int count = 0;  // Line counter (result) 
    char filename[MAX_FILE_NAME]; 
    char c;  // To store a character read from file 
  
    // Get file name from user. The file should be 
    // either in current folder or complete path should be provided 
    printf("Enter file name: "); 
    scanf("%s", filename); 
  
    // Open the file 
    fp = fopen(filename, "r"); 
  
    // Check if file exists 
    if (fp == NULL) 
    { 
        printf("Could not open file %s", filename); 
        return 0; 
    } 
  
    // Extract characters from file and store in character c 
    for (c = getc(fp); c != EOF; c = getc(fp)) 
        if (c == '\n') // Increment count if this character is newline 
            count = count + 1; 
  
    // Close the file 
    fclose(fp); 
    printf("The file %s has %d lines\n ", filename, count); 
  
    return 0; 
}

Posted by: Guest on January-11-2021

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