Question

(c programming)

Given the function declaration and documentation below, write the function definition. Do not use the the standard library function fputc.

/// @brief Writes a character to a specified file output stream.
/// @param outstream A FILE* variable for an output stream to write a character to.
/// @param outchar The character to be written to an output stream.
/// @return On success, returns the written character. 
/// @note This function assumes #include <stdio.h> and a working, valid FILE* variable to an output stream.
char placechar(FILE* outstream, char outchar);

Answer 1

char placechar(File* outstream, char outchar);

its function definition is below:

char placechar(FILE* outstream, char outchar){

    //writing data of specified format to file  
    //fprintf will return the no. of characters
    // written to file on success
    int res = fprintf(outstream, "%c",outchar);
    
    //if character has been written to file
    if(res == 1)
        return outchar;

    //closing file  
    fclose(outstream);

    return '\0';
}

Output:

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