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what would be the output of the following program?
main()
{
int k = 123;
char *ptr;
ptr = &k;
printf("%d",*ptr);
}
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Answer / vadivelt
Output would be 123.
Since, the character pointer can hold the values
0 - 255(if it is unsigned) or -128 to 127 (if it is signed), we
will get value of k as result.
But if the k value is k > 255 and the pointer is unsigned,
or if the k value is k > -129 and k < 128 and the pointer
is signed then only lower 1 byte of k would be the result.
Remaining data will be lost.
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / vadivelt
Hi Srsabariselvan,
If you are not very clear on the answer, please avoid to post
it. Because your answer seems to be misguiding the persons
who are very new to this question(probly pointers).
Who said that a pointer has to hold the address of same
datatype????.... a pointer of any datatype can hold the
address of any other data types(only it is enough to have
proper typecasting).
There will not be a compilation error. But most of the time
loss of data may be there(ie., when a bigger size of
datatype is typecasted to smaller eg: int* is typecasted to
char*). Please read the answer #1 for clear understanding.
Still if you are not clear on the concept, Copy the code
and execute it in ur compiler and analys the output.
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / srsabariselvan
The program results in compilation error.
NOTE: a pointer can stores the address of same data type.
it can't store the address of another data type.
i.e.,
character pointer can stores the address of character data.
it can't store the address of integer data.
| Is This Answer Correct ? | 2 Yes | 2 No |
Answer / ankush
i also have a compilation error.....
""Cannot convert 'int_ss*' to 'char*' in function main()""
why its so....???
i want some answer.....
is my compiler wrong....
| Is This Answer Correct ? | 0 Yes | 0 No |
I need testPalindrome and removeSpace #include <stdio.h> #define SIZE 256 /* function prototype */ /* test if the chars in the range of [left, right] of array is a palindrome */ int testPalindrome( char array[], int left, int right ); /* remove the space in the src array and copy it over to the "copy" array */ /* set the number of chars in the "copy" array to the location that cnt points t */ void removeSpace(char src[], char copy[], int *cnt); int main( void ) { char c; /* temporarily holds keyboard input */ char string[ SIZE ]; /* original string */ char copy[ SIZE ]; /* copy of string without spaces */ int count = 0; /* length of string */ int copyCount; /* length of copy */ printf( "Enter a sentence:\n" ); /* get sentence to test from user */ while ( ( c = getchar() ) != '\n' && count < SIZE ) { string[ count++ ] = c; } /* end while */ string[ count ] = '\0'; /* terminate string */ /* make a copy of string without spaces */ removeSpace(string, copy, ©Count); /* print whether or not the sentence is a palindrome */ if ( testPalindrome( copy, 0, copyCount - 1 ) ) { printf( "\"%s\" is a palindrome\n", string ); } /* end if */ else { printf( "\"%s\" is not a palindrome\n", string ); } /* end else */ return 0; /* indicate successful termination */ } /* end main */ void removeSpace(char src[], char copy[], int *cnt) { } int testPalindrome( char array[], int left, int right ) { }
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