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Array Basics in FORTRAN 95
Subscripted Variables  In algebra and in FORTRAN 95 Xi ,
Yj, Zk X (i), Y (j), Z (k) REAL ,
DIMENSION(10) :: X, Y ,Z, W Operations : 1. Summation x_ sum = S Xi
x_ sum = SUM (X) 2. Product y_ prd = ? Yj
y_ prd =PRODUCT (Y) |
| Arrays * Operations Using FORTRAN
95 library functions 1. Maximum
value x_ max=MAXVAL (X) 2. Minimum
value y_ min=MINVAL (Y) 3. Assigning
values Z = -2.5 ! For all! 4. Changing a
value X(3) = 4.8 ! Just one! 5. Changing
values Y(1:5:2) = 1.52 Which? 6. Applying DO
loops (See: s10_adn.F) |
| Array Features in FORTRAN 95Library
function: MAXVAL z_max =
MAXVAL(Z, MASK=Z>0) Library
function: MATMUL d_mult =
MATMUL(X,Y) Adding
matrices : W = X + Z Note: See
Appendix in the text book! Are you ready for a bonus point quiz? |
| Two -dimensional Arrays REAL ,
DIMENSION(6,6) :: AA, BB, CC INTEGER :: j,
k, n =6 DO j = 1, n DO k = 1, n AA(j,k) = j**k
+ k/j BB(j,k) = (k+j)**2
– k*j END DO END DO Sketch the flow chart , please! |
| Flow Chart for Nested Do Loops
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| Let Us See The Solution !
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| How Much Time Was Used?
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| Getting Some Fresh Air
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