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Q. What is Arrays Pointers?
An array is a collection of similar type of data. Arrays are extremely popular data structures in parallel programming because of their easiness of declaration and use. At the one hand arrays are able to be used as common memory resource for Shared memory programming on the other hand they are able to be easily partitioned in sub-arrays for Data parallel programming. This is flexibility of arrays which makes them most often used data structure in parallel programming. We will study arrays in context of two languages C and Fortran 90.
Let's have a look at the array shown below. The size of array is 10.
Index of first element in Fortran 90 is 1 however which is 0 in C and as a result index of last element in Fortran 90 is 10 and which is 9 in C. If we allot the name of array for example A then ith element in Fortran 90 is A (i) however in C it's A [i-1]. Arrays can be one-dimensional or they can be multi-dimensional.
Q. Show the Programmes for Parallel Systems? Adding elements of an array using two processor int sum, A[ n] ; //shared variables
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