Answer Posted / rudra prasad panda

Pointer is a variable containing the addres of another
variable;
Constant pointer is a variable which points to a variable
constantly.it means that , once it is initialised,it cannot
be changed.Till the end of program,it points to that
variable only;
EXAMPLE:
char k,m;
const char *p=&k;
p=&m;//(syntax error)

********
A pointer to a constant is a pointer such that the contents
of the variable(pointed by the pointer)cannot be modified
throuhg the pointer;
EXAMPLE:
char m='l';
char * const p;
p=&m;
*p='u';//syntax error
m='k';//no syntax error

Apart from dennis ritchie who the other person who contributed in design of c language.

1478

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#include main() { int *p, *c, i; i = 5; p = (int*) (malloc(sizeof(i))); printf(" %d",*p); *p = 10; printf(" %d %d",i,*p); c = (int*) calloc(2); printf(" %d ",*c); }

1108

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Explain the bubble sort algorithm.

1113

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#define MAX(x,y) (x) >(y)?(x):(y) main() { inti=10,j=5,k=0; k= MAX(i++,++j); printf("%d..%d..%d",i,j,k); }

1212

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Ow can I insert or delete a line (or record) in the middle of a file?

1050

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In c programming, explain how do you insert quote characters (? And ?) Into the output screen?

1310

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What are the difference between a free-standing and a hosted environment?

1344

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Do you know the use of 'auto' keyword?

1267

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Is the exit() function same as the return statement? Explain.

1157

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What are 3 types of structures?

1106

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How to compare array with pointer in c?

1170

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Explain how do you generate random numbers in c?

1134

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What do the functions atoi(), itoa() and gcvt() do?

1247

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Explain how can you tell whether two strings are the same?

1079

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What is the use of gets and puts?

1093

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