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Recent questions tagged pointers

4 votes
1 answer
93
NIELIT 2016 MAR Scientist B - Section C: 14
Prior to using a pointer variable it should be declared. initialized. both declared and initialized. none of these.
Prior to using a pointer variable it should bedeclared.initialized.both declared and initialized.none of these.
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12 votes
2 answers
98
ISRO2020-62
What is output of the following ‘C’ code assuming it runs on a byte addressed little endian machine? #include<stdio.h> int main() { int x; char *ptr; x=622,100,101; printf("%d",(*(char *)&x)*(x%3)); return 0; } $622$ $311$ $22$ $110$
What is output of the following ‘C’ code assuming it runs on a byte addressed little endian machine?#include<stdio.h int main() { int x; char *ptr; x=622,100,101; pri...
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4 votes
4 answers
100
Pointers address
https://gateoverflow.in/?qa=blob&qa_blobid=14433986388826671915 int main() { int a = 10; int *b = &a; scanf("%d",b); printf("%d",a+50); } What will be the Output of the following code if input given is $25$ ?
https://gateoverflow.in/?qa=blob&qa_blobid=14433986388826671915int main() { int a = 10; int *b = &a; scanf("%d",b); printf("%d",a+50); }What will be the Output of the fol...
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0 votes
0 answers
104
Ullman(2e) Exercise-8.3.2 page no-524 Code Generation
Generate code for the following three-address statements assuming stack allocation where register SP points to the top of the stack x = 1 x=a x = a + 1 x = a+b The two statements x = b * c y = a + x
Generate code for the following three-address statements assuming stack allocation where register SP points to the top of the stackx = 1x=ax = a + 1x = a+bThe two stateme...
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1 votes
0 answers
106
Geeks for Geeks : C Program
In the above 4 Statements which would print 123 as output ? Explain also.
In the above 4 Statements which would print 123 as output ? Explain also.
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1 votes
2 answers
108
Array
Tell me the difference : &(arr+1) and &arr+1
Tell me the difference :&(arr+1) and &arr+1
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0 votes
1 answer
109
is it dangling pointer
is it dangling pointer ? int main(void) { int* p; printf("%d",*p); return 0; } https://ideone.com/IN77el
is it dangling pointer ?int main(void) { int* p;printf("%d",*p); return 0;} https://ideone.com/IN77el
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0 votes
1 answer
111
C Programming
main() { unsigned int i= 255; char *p= &i; int j= *p; printf("%d\n", j); unsigned int k= *p; printf("%d", k); } Both the outputs are -1. I have even tried with - int i = 255(3rd line). Still the output is -1. I don't understand how it is -1.
main(){unsigned int i= 255;char *p= &i;int j= *p;printf("%d\n", j);unsigned int k= *p;printf("%d", k);} Both the outputs are -1. I have even tried with - int i = 255(3rd ...
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1 votes
1 answer
112
Output of following program(Self Doubt)
#include <stdio.h> main (){ unsigned x = -10; int X = 20; if (X > x) printf ("Hello"); else{ printf ("%d",x); printf ("Jello"); } }
#include <stdio.h>main (){unsigned x = -10;int X = 20;if (X x) printf ("Hello");else{ printf ("%d",x); printf ("Jello"); }}
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0 votes
0 answers
113
Function Pointer question
#include<stdio.h> int main ( ) { int demo ( ); // What is this and what does it do? demo ( ); (*demo) ( ); } int demo ( ) { printf("Morning"); }
#include<stdio.h>int main ( ){ int demo ( ); // What is this and what does it do? demo ( ); (*demo) ( );}int demo ( ){ printf("Morning");}
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3 votes
2 answers
115
MadeEasy Subject Test 2019: Programming & DS - Programming In C
char *a = “MADEEASY”; char *b = “GATECSIT2019”; char *r = a; char *s = b; printf(“%d”, (int) strlen (b+3[r] – 1[s])); return 0; Whats the output? Answer given 8
char *a = “MADEEASY”;char *b = “GATECSIT2019”;char *r = a;char *s = b;printf(“%d”, (int) strlen (b+3[r] – 1[s]));return 0; Whats the output? Answer given 8
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0 votes
1 answer
117
C programming
#include<stdio.h> void fun(int *p,int *q) { p=q; *p=q; } int i=0,j=1; int main() { fun(&i,&j); printf("%d%d",i,j); } What will be the output of i and j in 16-bit C Compiler?
#include<stdio.h void fun(int *p,int *q) { p=q; *p=q; } int i=0,j=1; int main() { fun(&i,&j); printf("%d%d",i,j); }What will be the output of i and j in 16-bit C Compiler...
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