Question

Consider the array A
A = 3 5 -4
-8 -1 33
-17 6 -9
Write a programme that computes the array B by computing the natural logarithm of all the elements of A whose value is no less than 1, and adding 20 to each that is equal to or greater than 1. Do this by using a logical array as a mask. [this should be done using matlab ]

Answer 1

//Sorry buddy I don't know the matlab so i done it in C
#include<stdio.h>
#include<conio.h>
void main() {
int a[]={3,5,-4,-8,-1,33,-17,6,-9};
int b[10], i,j=0;
clrscr();
for(i=0;i<9;i++) {
if(a[i]>=1) {
b[j]=a[i]+20;
j++;
}
}
printf("\nPrinting the array:\n");
for(i=0;i<j;i++) {
printf("%d\t",b[i]);
}
getch();
}