added cpp program

Product Of Array Except Self

@@ -0,0 +1,35 @@
+/*
+Given an integer array nums, return an array answer such that answer[i] is equal to the product of all the elements of nums except nums[i].
+The product of any prefix or suffix of nums is guaranteed to fit in a 32-bit integer.
+You must write an algorithm that runs in O(n) time and without using the division operation.
+*/
+
+/*
+Input: nums = [1,2,3,4]
+Output: [24,12,8,6]
+*/
+
+/*
+Input: nums = [-1,1,0,-3,3]
+Output: [0,0,9,0,0]
+*/
+
+#include<iostream>
+using namespace std;
+int main()
+{
+    int a[100],b[100],n,mult=1;
+    cout<<"Enter the number of elements in the array: ";
+    cin>>n;
+    cout<<"Enter the elements of the array: ";
+    for(int i=0;i<n;i++)
+    {
+        cin>>a[i];
+        mult = mult * a[i];
+    }
+    for(int i=0;i<n;i++)
+    {
+        b[i] = mult/a[i];
+        cout<<b[i]<<" ";
+    }
+}

copy.c

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+#include<stdio.h>
+#include<string.h>
+#include<conio.h>
+main()
+{
+
+    char a[1000];
+    printf(" ENTER A STRING\n");
+    scanf("%[^\n]s",a);
+    char b[strlen(a)];
+    strcpy(b,a);
+    printf("copied string:   %s",b);
+    printf("\n %d are the number of characters copied",strlen(a));
+    getch();
+}