C – Reading String from File – Ameerpet Technologies

Reading String from the file:

fgets() is used to read specified number of characters(String) at a time.

char* fgets(char* str, int size, FILE* stream);

It reads “size” bytes from specified “stream” and stores into “str”.
On Success, it returns the pointer to string that has read.
On failure, it returns NULL pointer.
It reads only size-1 characters into String every time. Last character of every string is null(\0) by default.

#include<stdio.h>
int main()
{
            FILE* p;
            char str[10];
            p = fopen(“code.c”, “r”);
            if(p==NULL)
            {
                        printf(“No such file to open \n”);
            }
            else
            {
                        fgets(str, 10, p);
                        printf(“The string is : %s \n”, str);
                        fclose(p);
            }
            return 0;
}

Reading the complete file using fgets():

#include<stdio.h>
int main()
{
            FILE* p;
            char str[10];
            p = fopen(“code.c”, “r”);
            if(p==NULL)
            {
                        printf(“No such file to open \n”);
            }
            else
            {
                        while(fgets(str, 10, p))
                        {
                                    printf(“%s \t”, str);
                        }
                        fclose(p);
            }
            return 0;
}

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