Program introducing the use of variables of type integer and illustrating the use of the "+" operator for integers program additions; var i, j, k: integer; a, b, c: string; begin writeln('Let us use "+" with integers:'); writeln('i ?'); readln(i); writeln('j ?'); readln(j); k := i + j; writeln(i, ' + ', j, ' = ', k); writeln('Let us use "+" with strings:'); writeln('a ?'); readln(a); writeln('b ?'); readln(b); c := a + b; writeln(a, ' + ', b, ' = ', c); readln; end. Sample output: >Let us use "+" with integers: >i ? <17 >j ? <24 >17 + 24 = 41 >Let us use "+" with strings: >a ? <17 >b ? <24 >17 + 24 = 1724