Diksha choudhary 2(#021)

Question 2/Answer/README.md

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+**Question 2 - Solution**
+**Execution Instructions**
+
+    Compiler Details : gcc
+    Type down the command in the linux terminal answer_2.c -o ob
+    The above mentioned command will generate an object file which can be run directly on the terminal using ./ob
+
+**Input & Output**
+
+    Input
+          A file named "1Kdigits.txt" containing the digits
+    Output
+          The highest product is 23514624000.000000
+
+**Author**
+
+    Diksha Choudhary
+    Email: [email protected]

Question 2/Answer/answer_2.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+int main()
+{
+  char ch[1000];
+  FILE *fptr; //pointer to the file
+  int i,j,n,temp,pos;
+  float prod=1,max=1;
+  fptr=fopen("1Kdigits.txt","r"); //stored the digits in a file 
+  if(fptr==NULL) //checking if the file has openend successfully or not
+    printf("Unable to open file");
+  else
+  {
+      fgets(ch,1000,fptr);
+      j=0;
+  i=0;
+  while(i<13)
+  {
+    n=ch[j]-'0';
+    if(n==0)
+    {
+      prod=1;
+      i=0;
+    }
+    else
+    {
+      prod=prod*n;
+      i=i+1;
+  }
+j=j+1;
+  }
+  pos=j-1;
+  i=13;
+  max=prod;
+  while(j<1000)
+  {
+    n=ch[j]-'0';
+    if(n==0)
+    {
+      if (i>=13&&prod>max)
+      {
+          max=prod;
+          pos=j;
+      }
+      prod=1;
+      i=0;
+    }
+    else
+  {
+    if(i<13)
+    {
+      prod=prod*n;
+      i=i+1;
+    }
+    else
+    {
+      if(prod>max)
+      {
+        max=prod;
+        pos=j;
+      }
+        temp=ch[j-13]-'0';
+        prod=prod/temp;
+        prod=prod*n;
+      }
+
+    }
+    j=j+1;
+  }
+  if(prod>max)
+  {
+    max=prod;
+    pos=j;
+  }
+}
+  printf("The highest product is %f",max);
+  return 0;
+}