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Recent questions tagged pointers

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1 answer
121
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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122
awes previous year
Give the output of the following program #include <iostream.h> void main() { int x[]={5,2,6,9,8}; int *p,**q,*t; p=x; t=x+1; q=&t; cout<<endl<<*++p<<" "<<**q<<" "<<*t++; } (a) 1 1 1 1 (b) 5 2 6 (c) 2 6 2 (d) 2 6 9
Give the output of the following program#include <iostream.h>void main(){int x[]={5,2,6,9,8};int *p, q,*t;p=x;t=x+1;q=&t;cout<<endl<<*++p<<" "<< q<<" "<<*t++;}(a) 1 1 1 1...
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1 votes
0 answers
123
Explain the following
Please explain this.
Please explain this.
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1 answer
125
self doubt
++*p and (*p)++ both are same????
++*p and (*p)++both are same????
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1 answer
129
C programming
What is the output of this program? int main(void) { int a = 10, b = 20, c = 30; printf(" %d..%d..%d ", a+b+c, (b = b*2), (c = c*2)); return 0; } (A) 60..40..60 (B) 110..40..60 (C) 110..20..30 (D) 60..20..30 does sequence point comes into picture here?
What is the output of this program?int main(void){int a = 10, b = 20, c = 30;printf(" %d..%d..%d ", a+b+c, (b = b*2), (c = c*2));return 0;}(A) 60..40..60(B) 110..40..60(C...
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0 answers
131
C programming - Type casting
Please explain the output for the following program: #include<stdio.h> int main() { int i = 100; int *a = &i; float *f = (float *)a; (*f)++; printf("%d", *a); //getting some garbage value }
Please explain the output for the following program: #include<stdio.h>int main() { int i = 100; int *a = &i; float *f = (float *)a; (*f)++; pri...
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2 answers
132
self doubt
what is the difference between *(ptr)++ and ptr++ where char *ptr="gateoverflow"
what is the difference between*(ptr)++ and ptr++ where char *ptr="gateoverflow"
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1 votes
1 answer
133
syntatactically correct?
consider the two declarations void *voidPtr; char *charPtr; which of the following assignments are syntactically correct? (a)charPtr= voidPtr (b)*charPtr=voidPtr (c)*voidPtr=*charPtr (d)voidPtr=charPtr please explain!
consider the two declarationsvoid *voidPtr;char *charPtr;which of the following assignments are syntactically correct?(a)charPtr= voidPtr(b)*charPtr=voidPtr(c)*voidPtr=*c...
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1 answer
134
array long with pointers
give the complete solution with explanation int main() { int arr [2] [2] [2] = {10,2,3,4,5,6,7,8}; int *p, *q; p = &arr[1] [1] [1]; q = (int*) arr; printf("%d ,%d \n",*p ,*q); return 0; }
give the complete solution with explanationint main(){ int arr = {10,2,3,4,5,6,7,8}; int *p, *q; p = &arr ; q = (int*) arr; printf("%d ,%d \n",*p...
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13 votes
8 answers
136
Two dimensional array
Consider a 2 dimensional array A[40...95,40...95] in lower triangular matrix representation. The size of each element of array is 1 Byte.If array is implemented in memory as Row major,with base address as 1000,the address of A[66][50] is ..... Ans. 1361
Consider a 2 dimensional array A[40...95,40...95] in lower triangular matrix representation. The size of each element of array is 1 Byte.If array is implemented in memory...
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1 votes
0 answers
137
Pointers
#include<stdio.h> int main() { char A[5][7][6]; char *p[5][7][6]; printf("%d\t", (unsigned)(A+1)-(unsigned)A); printf("%d", (unsigned)(p+1)-(unsigned)p); } What will be the output ?? 1. 42 ,42 2. 42,336 3. 336,42 4. 1,1
#include<stdio.h>int main(){char A[5][7][6];char *p[5][7][6];printf("%d\t", (unsigned)(A+1)-(unsigned)A);printf("%d", (unsigned)(p+1)-(unsigned)p);}What will be the outpu...
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0 votes
1 answer
138
Pointers in C
What is a variable pointer? please note the question is not asking about pointer variables, but the specific term.
What is a variable pointer? please note the question is not asking about pointer variables, but the specific term.
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1 votes
2 answers
139
Self doubt
What are the minimum number of pointers required to implement a stack using single ended queue ( the queue is NOT a dequeue )?
What are the minimum number of pointers required to implement a stack using single ended queue ( the queue is NOT a dequeue )?
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0 votes
0 answers
140
Programming
int main(){ int arr[3]={2,3,4}; char *p; p = (char*)arr; printf("%d",*p); p=p+1; printf("%d",*p); return 0; }
int main(){int arr[3]={2,3,4};char *p;p = (char*)arr;printf("%d",*p);p=p+1;printf("%d",*p);return 0;}
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0 votes
1 answer
141
Programming
main() { char s[]={'a','b','c','\n','c','\0'}; char *p,*str,*str1; p=&s[3]; str=p; str1=s; printf("%d",++*p+++*str1-32); } output is 76 pls explain.
main() { char s[]={'a','b','c','\n','c','\0'}; char *p,*str,*str1; p=&s[3]; str=p; str1=s; printf("%d",++*p+++*str1-32); }output is 76 pls explain.
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0 votes
3 answers
142
Arrays
Int A[3]={0,1,2} A++; For this code snippet un C will there be a compilation error,if yes then please explain a bit.
Int A[3]={0,1,2}A++; For this code snippet un C will there be a compilation error,if yes then please explain a bit.
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0 votes
2 answers
143
C programming
#include <stdio.h> main() { char *p = "Sanfoundry C-Test"; p[0] = 'a'; p[1] = 'b'; printf("%s", p); }
#include <stdio.h main() { char *p = "Sanfoundry C-Test"; p[0] = 'a'; p = 'b'; printf("%s", p); }
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0 votes
2 answers
144
C programming
What is the value of the following expression? main() { int i = 257; int *iPtr = &i; printf("%d %d", *((char*)iPtr), *((char*)iPtr+1) ); } (A) 1 1 (B)1 2 (C) 2 3 Ans given option a pls explain.
What is the value of the following expression? main() { int i = 257; int *iPtr = &i; printf("%d %d", *((char*)iPtr), *((char*)iPtr+1) ); } (A) 1 1 (B)1 2 (...
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1 votes
1 answer
145
Multi-dimensional Array
Can anyone please verify whether I have calculated the addresses correctly or not?
Can anyone please verify whether I have calculated the addresses correctly or not?
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0 votes
1 answer
149
C programming
Declare a function prototype which will do 1)recives two integer and float 2)return address of array of integers. Please also explain it
Declare a function prototype which will do1)recives two integer and float2)return address of array of integers.Please also explain it
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