How to Write and Compile C Programs, An Introduction to “C” Programming, What are C libraries?, C Variable Types, Logical Operators, The If Statement, The For Loop, Functions, Arrays, Strings, Strings,Creating a Structure, Pointers, File Handling in C, Files and Streams.

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number
003F45A8
ptr_to_num
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number
p1 p2
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94
table
ptr
( ptr + 4 )
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Fig. 7.2 | Graphical representation of a pointer pointing to an integer variable in memory.
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Fig. 7.3 | Representation of y and yPtr in memory.
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49. main() {
FILE *in, *out ;
char c ;
in = fopen (“infile.dat”, “r”) ;
out = fopen (“outfile.dat”, “w”) ;
while ((c = getc (in)) != EOF)
putc (toupper (c), out);
fclose (in) ;
fclose (out) ;
}
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