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C Program to write the message and the length using the fwrite

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YasminRadwan26
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2022-06-22
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C Program to write the message and the length using the fwrite

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YasminRadwan26
2022-06-22
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#include <stdio.h>
#include <string.h>
int main()
{
    //file pointer
    FILE *fp = NULL;
    //Message
    char * message = "I love Aticleworld.com";
    //Variable for message length
    int length = 0;
    //create and open the binary file
    fp = fopen("aticleworld.dat", "wb");
    if(fp == NULL)
    {
        printf("Error in creating the file\n");
        exit(1);
    }
    //Get the length of message
    length = strlen(message);
    //write the message len in file
    fwrite(&length, sizeof(int), 1, fp);
    //write message in file
    fwrite(message, sizeof(char),length, fp);
    fclose(fp);
    return 0;
}

Output:

In the below image, you can see the fwrite function write the 22 (Message length)  as it as in binary format, so 22 is ASCII value of SYN and it is showing in the file.

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