Pascal matrix

Here lie that made Pascu paskalnye tasks with detailed comments. For more detailed comments, I have not seen in nature.


1 Given three whole matrix. Print the one where more zero rows.


2 Create a program that reads the text line by another program in Pascal (enter it from the keyboard), finds comments and prints them.


3 Given a file containing information about the substances (names and specific gravity). Select the data on the substances that are lighter than water, arrange them in increasing the proportion of, and rewrite the data in a separate file.


4 Develop a program to display a graph of discrete functions (histogram). Image graphics should consist of rectangles of different colors, the height of each of them corresponds to one value of the function.