Question

-Create a function output() in C that takes the pointer to the array and its size and prints the arrays' contests. (malloc format)

(function prototype : void output(int *arrayPtr, int size);

-Create a function check() in C that takes the pointer to the array and a number and checks if the number is in the array. If the number is in the array, returns the index of the element of the array holding the number. Otherwise, returns -1.

Answer 1

question 1:

code:

#include <stdio.h>
#include <stdlib.h>

void output(int * arrayPtr, int size){
int i;
for(i = 0; i < size; i++){
printf("%d\n",arrayPtr[i]); //printing all elements
}
}

int main(void) {
int *array;
int size;
  
//for manual input
scanf("%d",&size);
array = (int*)malloc(size * sizeof(int)); //allocating memory
int i;
for(i = 0; i < size; i++){
scanf("%d",&array[i]);
}
  
//if donot want to enter everything mannually then remove comment and comment above code
   // int array[] = {32,9,52,63,78,67,52,34,23,4,36,7,5,78,56,83,43,34,12};
   // int size = sizeof(array)/sizeof(array[0]);

output(array,size);
   return 0;
}

qi.c x q2.c #include <stdio.h> #include <stdlib.h> OWN void output(int * arrayPtr, int size) { int i; for(i = 0; i < size; i++){ printf("%d\n", arrayPtr[i]); } } //printing all elements 8 9 10 { 11 12 int main(void) { int *array; int size; 13 //allocating memory //for manual input scanf("%d",&size); array = (int*)malloc(size * sizeof(int)); int i; for(i = 0; i < size; i++){ scanf("%d",&array[i]); //if donot want to enter everything mannually then remove comment and comment above code // int array[] = {32,9,52,63,78, 67,52,34,23,4,36,7,5,78,56,83,43,34,12}; // int size = sizeof(array)/sizeof(array[0]). output (array, size); return 0; } 29 }

output:

- O X [/cygdrive/c/Users/rakesh/Desktop/HomeworkLib rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ gcc qi.c rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib $.la 32

C/ cygdrive/c/Users/rakesh/Desktop/HomeworkLib - O X rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib rakesh@LAPTOP-3KVD9S77 / cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ gcc q1.c rakesh@LAPTOP-3KVD9S77 / cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ ./a rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib

question 2:

code:

#include <stdio.h>
#include <stdlib.h>

int check(int * arrayPtr, int size, int num){
int i;
for(i = 0; i < size; i++){ // traverse whole array
if(arrayPtr[i] == num){ // checking if the element is equal to num
return i; // returning index
break; // stop the loop if num is matched
}
}
return -1; //if num not found return -1
}

int main(void) {
int *array;
int size;
int num;
  
// for manual input
printf("Enter size: ");
scanf("%d",&size);
array = (int*)malloc(size * sizeof(int)); //allocating memory
int i;
printf("Enter elements of array: ");
for(i = 0; i < size; i++){
scanf("%d",&array[i]);
}
  
printf("Enter number to search: ");
   scanf("%d",&num); //for manual input
  
  
//if donot want to enter everything mannually then remove comment and comment above code
   // int array[] = {32,9,52,63,78,67,52,34,23,4,36,7,5,78,56,83,43,34,12};
   // int size = sizeof(array)/sizeof(array[0]);
   // int num = 23; // returns 8 as index start with 0.

   int index = check(array,size,num);
   printf("%d\n",index);
   return 0;
}

1 91.C x q2.c #include <stdio.h> #include <stdlib.h> int check(int * arrayPtr, int size, int num) { int i; for(i = 0; i < size; i++{_ Il traverse whole array if(arrayPtr[i] == num) { // checking if the element is equal to num return i; // returning index break; // stop the loop if num is matched return -1; //if num not found return -1 16 int main(void) { int *array; int size; int num; //allocating memory // for manual input printf("Enter size: "); scanf("%d", &size); array = (int*)malloc(size * sizeof(int)); int i; printf("Enter elements of array: "); for(i = 0; i < size; i++){ scanf("%d",&array[i]);

plhtFl "Enter number to search: "); scanf("%d",&num); //for manual input 7/if donot want to enter everything mannually then remove comment and comment above code // int array[] = {32,9,52,63,78,67,52,34,23,4,36,7,5,78,56,83,43, 34,12}; // int size = sizeof(array)/sizeof(array[@]); // int num = 23; // returns 8 as index start with 0. 40 41 int index = check(array, size, num); printf("%d\n", index); return 0; } 42 }

output:

- O X C/cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ subl q2.c rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ gcc 92.C rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib $.la Enter size: 4 Enter elements of array: 12 34 76 Enter number to search: 76

- - o X [/cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ subl q2.c rakesh@LAPTOP-3KVD9577 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ gcc 92.0 rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ ./a Enter size: 4 Enter elements of array: 12 34 76 Enter number to search: 76 rakesh@LAPTOP-3KVD9S77 / cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ gcc 42.0 rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib $ ./a rakesh@LAPTOP-3KVD9S77 /cygdrive/c/Users/rakesh/Desktop/HomeworkLib $