В презентацията [21.Символни-низове-увод.pptx](https://github.com/BG-IT-Edu/School-Programming/blob/55bc9e8d4e4dbe61b11060dee57eba9917716136/Courses/Applied-Programmer/Programming-Fundamentals/05-%D0%A1%D0%B8%D0%BC%D0%B2%D0%BE%D0%BB%D0%BD%D0%B8-%D0%BD%D0%B8%D0%B7%D0%BE%D0%B2%D0%B5/21.%D0%A1%D0%B8%D0%BC%D0%B2%D0%BE%D0%BB%D0%BD%D0%B8-%D0%BD%D0%B8%D0%B7%D0%BE%D0%B2%D0%B5-%D1%83%D0%B2%D0%BE%D0%B4.pptx) в примера на слайд 4, **let** ch = str[2]; // OK трябва да е **char** ch = str[2]; // OK