C Language Interview Question and Answers
| 81. |
What is pointer to a pointer? |
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If a pointer variable points another pointer value. Such a situation is known as a pointer to a pointer.
Example : int *p1,
**p2,
v=10;P1=&v; p2=&p1;
Here p2 is a pointer to a pointer. |
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| 82. |
What is the difference between linker and linkage? |
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Linker converts an object code into an executable code by linking together the necessary built in functions. The form and place of declaration where the variable is declared in a program determine the linkage of variable. |
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| 83. |
What is a function? |
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A large program is subdivided into a number of smaller programs or subprograms. Each subprogram specifies one or more actions to be performed for the larger program. Such sub programs are called functions. |
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| 84. |
What is an argument? |
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An argument is an entity used to pass data from the calling to a called function. |
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| 85. |
What are built in functions? |
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The functions that are predefined and supplied along with the compiler are known as built in functions. They are also known as library functions. |
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Gk Questions with Answers