What do the following program segments do? Please verify your results with a trace table. a) int i, j, n = 5; for(i=1;i b) for (row = 13 row 5 int main () { // Local variable declaration: int a = 10; } // do Loop execution do { cout < < "value of a: " < < a < < endl; a = a + 1; } while( a < 20 ); return 0;