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Compiler design miscellaneous

  1. For a C program accessing X[i][j][k], the following intermediate code is generated by a compiler. Assume that the size of an integer is 32 bits and the size of a character is 8 bits.
    t0 = i * 1024
    t1 = j * 32
    t2 = k * 4
    t3 = t1 + t0
    t4 = t3 + t2
    t5 = X[t4]
    Which one of the following statements about the source code for the C program is
    1. X is declared as “int X[32][32][8]”.
    2. X is declared as “int X[4][1024][32]”.
    3. X is declared as “char X[4][32][8]”.
    4. X is declared as “char X[32][16][2]”.
Correct Option: A

X is declared as “int × [32] [32] [8]”



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