Question
#include <stdio.h>
void foo(int *p, int x){
*p = x;
}
int main(){
int *z;
int a = 20, b = 25;
z = &a;
foo(z, b);
printf("%d", a);
return 0;
}
The output of the given C program is __________. (Answer in integer)
#include <stdio.h>
void foo(int *p, int x){
*p = x;
}
int main(){
int *z;
int a = 20, b = 25;
z = &a;
foo(z, b);
printf("%d", a);
return 0;
}
The given C program demonstrates the use of pointers and function calls to modify values. Here's a step-by-step explanation:
1. The function
2. In
3. A pointer
4. The function
5. The
6. Since
Final Output: 25
1. The function
foo(int *p, int x) takes a pointer to an integer p and an integer x. It sets the value pointed to by p to x. This operation means that the integer at the memory location p is updated to x.2. In
main(), two int variables a and b are initialized with values 20 and 25 respectively.3. A pointer
z is assigned the address of a (z = &a;), making z point to a.4. The function
foo is called with arguments z and b. Since z points to a, calling foo(z, b) effectively sets a to the value of b, which is 25.5. The
printf statement outputs the value of a.6. Since
a is modified to 25, the output of the program is 25, which falls within the specified range (25, 25).Final Output: 25
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Important Questions from Array
Which of the following initialization statement store six integer values in array?
Which of the following expression will delete the entire array pointed to by q?
Consider the following C program segment.
#include <stdio.h>
int main()
{
char s1[7] = "1234";
char *p;p = s1 + 2;
*p = '0';printf("%s", s1);
return 0;
What will be printed by the program?
}- Consider an array $A$ of integers of size $n$. The indices of $A$ run from 1 to $n$. An algorithm is to be designed to check whether $A$ satisfies the condition given below.
$\forall i,j \in \{1, \dots, n-1\}$ such that $i > j$, $(A[i + 1] - A[i]) > (A[j + 1] - A[j])$
Which one of the following gives the worst case time complexity of the fastest algorithm that can be designed for the problem? What is the output the given C language code snippet?
#include<stdio.h>
int main()
{
int x[] = {10,20,30};
int *p = x;
p++;
printf("%d",*p);
return 0;
}
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