print_str_esc.c

void print_str_esc(const char* str, FILE* stream){
    for(size_t i=0;str[i];i++){
        switch(str[i]){
            case '\n':
            {
                putc('\\', stream);
                putc('n', stream);
                break;
            }
            case '\t':
            {
                putc('\\', stream);
                putc('t', stream);
                break;
            }
            case '\a':
            {
                putc('\\', stream);
                putc('a', stream);
                break;
            }
            case '\b':
            {
                putc('\\', stream);
                putc('n', stream);
                break;
            }
            case '\f':
            {
                putc('\\', stream);
                putc('f', stream);
                break;
            }
            case '\r':
            {
                putc('\\', stream);
                putc('r', stream);
                break;
            }
            default:
            {
                putc(str[i], stream);
            }
        }
    }
}