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Recent questions tagged pointers

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241
c programming
What is the output of this C code?
What is the output of this C code?
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1 votes
1 answer
242
C programming
#include <stdio.h> int main() { short int a[10]; int i=0; for(i=0;i<10;i++) a[i] = 300 + i; char *c = (char*)a; printf("%d\n", *(c+4)); int *n = (int*)a; printf("%d\n",*(n)); } output ?
#include <stdio.h int main() { short int a[10]; int i=0; for(i=0;i<10;i++) a[i] = 300 + i; char *c = (char*)a; printf("%d\n", *(c+4)); int *n = (int*)a; printf("%d\n",*(n...
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6 votes
2 answers
244
GATE Overflow | Programming | Test 1 | Question: 8
What is the output of this program? #include <stdio.h> int main() { char *ptr; char string[] = "Hello 2017"; ptr = string; ptr += 4; printf("%s",++ptr); } Hello 2017 ello 2017 2017 o 2017
What is the output of this program?#include <stdio.h int main() { char *ptr; char string[] = "Hello 2017"; ptr = string; ptr += 4; printf("%s",++ptr); }Hello 2017ello 201...
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1 votes
2 answers
246
..
What is the output of the following C code int main( ) { int p[5] = {10, 11, 12, 13, 14}; int *ptr = (int *) (&p + 1); printf(“%d %d”, *(p + 1), *(ptr – 1)); }
What is the output of the following C code int main( ) { int p[5] = {10, 11, 12, 13, 14}; int *ptr = (int *) (&p + 1); printf(“%d %d”, *(p + 1), *(ptr – 1)); }
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2 votes
0 answers
248
Why does these functions behave diffrently ?
#include <stdio.h> void fun(int* p) { *p = 10; } void fun1(int *p) { int a = 10; p = &a; } int main() { int x = 30; int *p = &x; fun1(p); printf("%d\n",*p); // output = 30 fun(p); printf("%d",*p); // output = 10 }
#include <stdio.h void fun(int* p) { *p = 10; } void fun1(int *p) { int a = 10; p = &a; } int main() { int x = 30; int *p = &x; fun1(p); printf("%d\n",*p); // output = 30...
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1 answer
250
Array of pointers
Please help me out guys
Please help me out guys
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1 answer
251
UGC NET CSE | June 2010 | Part 2 | Question: 12
What will be the output of the following c-code? void main () { char *p= "ayqm"; char c; c=++*p; printf ("%c" , c); } $a$ $c$ $b$ $q$
What will be the output of the following c-code?void main () { char *p= "ayqm"; char c; c=++*p; printf ("%c" , c); }$a$$c$ $b$$q$
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2 votes
1 answer
252
c programming
int main() { int i,n; int x = 123456789; void *a = &x; unsigned char *c1 = (unsigned char*)a; for(i=0;i< sizeof a;i++) { printf("%u ",*(c1+i)); } char *c2 = (char*)a; printf("\n %d", *(c2+1)); char *c3 = (char*)a; printf("\n %u \n", *(c3+1)); } Output ?
int main() { int i,n; int x = 123456789; void *a = &x; unsigned char *c1 = (unsigned char*)a; for(i=0;i< sizeof a;i++) { printf("%u ",*(c1+i)); } char *c2 = (char*)a; pri...
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4 votes
2 answers
254
Doubt on array of pointers
In C/C++ an array of pointers is same as (A) Pointer to array (B) Pointer to pointer (C) Pointer to function (D) Pointer to structure
In C/C++ an array of pointers is same as(A) Pointer to array(B) Pointer to pointer(C) Pointer to function (D) Pointer to structure
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7 votes
2 answers
255
ISRO2016-25
What will be output of the following program? Assume that you are running this program in little-endian processor. #include<stdio.h> int main() { short a=320; char *ptr; ptr=(char *)&a; printf("%d",*ptr); return 0; } 1 320 64 Compilation error
What will be output of the following program? Assume that you are running this program in little-endian processor.#include<stdio.h int main() { short a=320; char *ptr; pt...
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4 votes
4 answers
256
ISRO2016-20
What is the output of this C code? #include<stdio.h> void main() { int k=5; int *p=&k; int **m=&p; printf("%d %d %d",k,*p,**m); } 5 5 5 5 5 junk 5 junk junk compile time error
What is the output of this C code?#include<stdio.h void main() { int k=5; int *p=&k; int m=&p; printf("%d %d %d",k,*p, m); }5 5 5 5 5 junk5 junk junkcompile time error
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0 votes
1 answer
258
Output of Program
main() { char *c , ch[10]; int *i , j[10]; float *f , g[10]; int x; c = ch; i = j; f = g; for ( x=0 ; x<=10 ; x++ ) printf("%p %p %p\n" , c+x , i+x , f+x); }
main(){char *c , ch[10];int *i , j[10];float *f , g[10];int x;c = ch;i = j;f = g;for ( x=0 ; x<=10 ; x++ )printf("%p %p %p\n" , c+x , i+x , f+x);}
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0 votes
1 answer
259
Output of Program ?
#include <stdio.h> int main() { int i = 10; int *const p = &i; fd(&p); printf("%d\n", *p); } void fd(int **p) { int j = 11; *p = &j; printf("%d\n", **p); }
#include <stdio.h int main() { int i = 10; int *const p = &i; fd(&p); printf("%d\n", *p); } void fd(int p) { int j = 11; *p = &j; printf("%d\n", p); }
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0 votes
1 answer
260
What is output of this Program ? Answer with Explanation .
#include <stdio.h> void fc(float *); int main() { int i = 10, *p = &i; fc(&i); } void fc(float *p) { printf("%f\n", *p); }
#include <stdio.h void fc(float *); int main() { int i = 10, *p = &i; fc(&i); } void fc(float *p) { printf("%f\n", *p); }
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0 votes
3 answers
261
lvalue
what is this lvalue error all about . pl explain in simple words
what is this lvalue error all about . pl explain in simple words
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0 votes
1 answer
264
Prog \ What is the output of the following program??
#include <stdio.h> int main() { struct node { int a; int b; int c; }; struct node s = { 3, 5, 6 }; struct node *pt = &s; printf("%d\n", *((int*)pt+1)); return 0; }
#include <stdio.h int main() { struct node { int a; int b; int c; }; struct node s = { 3, 5, 6 }; struct node *pt = &s; printf("%d\n", *((int*)pt+1)); return 0; }
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0 votes
1 answer
265
Prog\ What is output of the following?
#include <stdio.h> int main(void) { char a[5] = { 1, 2, 3, 4, 5 }; char *ptr = (char*)(&a + 1); printf("%d %d\n", *(a + 1), *(ptr - 1)); return 0; } (a) Compile Error (b) 2 1 (c) 2 5 (d) none of the above
#include <stdio.h int main(void) { char a[5] = { 1, 2, 3, 4, 5 }; char *ptr = (char*)(&a + 1); printf("%d %d\n", *(a + 1), *(ptr - 1)); return 0; }(a) Compile Error (b) 2...
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0 votes
1 answer
266
Prog\ What is the output of the following program?
#include<stdio.h> int a = 10; int main() { fun(); fun(); return 0; } int fun() { static int a = 1; printf("%d ",a); a++; return 0; }
#include<stdio.h int a = 10; int main() { fun(); fun(); return 0; } int fun() { static int a = 1; printf("%d ",a); a++; return 0; }
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0 votes
1 answer
267
Prog \ What is the output of the following program?
#include<stdio.h> #include<stdlib.h> int main() { char s[] = "Opendays2012"; int i = 0; while(*(s++)) i++; printf("%d",i); return 0; } (a) Segmentation Fault (b) Compile Error (c) 12 (d) 0
#include<stdio.h #include<stdlib.h int main() { char s[] = "Opendays2012"; int i = 0; while(*(s++)) i++; printf("%d",i); return 0; }(a) Segmentation Fault (b) Compile Err...
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0 votes
1 answer
270
Prog \ What is the output of this program?
#include<stdio.h> int main() { int a[10][20][30] = {0}; int *b = a; int *c = a+1; printf("%ld", c-b); return 0; }
#include<stdio.h int main() { int a[10][20][30] = {0}; int *b = a; int *c = a+1; printf("%ld", c-b); return 0; }
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