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Examples of declarations of external variables that are not definitions:
extern char stack[10];
extern int stkptr;
These declarations tell the compiler that the variables stack[] and stkptr are defined elsewhere, usually in some other file. If the keyword extern were omitted, the variables would be considered to be new ones and memory would be allocated for them. Remember, access to the same external variable defined in another file is possible only if the keyword extern is used in the declaration.
/* File : ext.c
This example shows reference to an external variable in more than one file. The program is organized in three files. The external variable 'a1' is defined in 'ext.c', and it is declared as extern in 'FILE3.c' */
Explain Binary number system. Ans. Binary Number System The number of system along with base or Radix two is termed as the Binary Number System. To show the number, 0 a
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These days, they're pretty much obsolete; they're definitely system-particular. They had to do with 16-bit programming under MS-DOS and perhaps some early on versions of Windows. I
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Tightly Coupled System- Shared Memory System Shared memory multiprocessorshas has following description: Every processor commune through a shared global memory. For
Normal 0 false false false EN-US X-NONE X-NONE Figure: SIMD Organisation
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