From e9a2b40da6576c83a99de88cdede2d3751442289 Mon Sep 17 00:00:00 2001
From: keshavgarg23 <kgarg_be20@thapar.edu>
Date: Wed, 16 Dec 2020 21:50:38 +0530
Subject: [PATCH 1/2] correct all hards

---
 ...1).c => correct author-JASKIRAT SINGH(1).c | 91 ++++++++++---------
 ...).c => corrected author-PALAK AGRAWAL(1).c | 36 ++++----
 ....c => corrected author-PRAGYA NAINWAL(1).c | 60 ++++++------
 3 files changed, 96 insertions(+), 91 deletions(-)
 rename author-JASKIRAT SINGH(1).c => correct author-JASKIRAT SINGH(1).c (81%)
 rename author-PALAK AGRAWAL(1).c => corrected author-PALAK AGRAWAL(1).c (59%)
 rename author-PRAGYA NAINWAL(1).c => corrected author-PRAGYA NAINWAL(1).c (79%)

diff --git a/author-JASKIRAT SINGH(1).c b/correct author-JASKIRAT SINGH(1).c
similarity index 81%
rename from author-JASKIRAT SINGH(1).c
rename to correct author-JASKIRAT SINGH(1).c
index 9cd43ba..8de65e7 100644
--- a/author-JASKIRAT SINGH(1).c	
+++ b/correct author-JASKIRAT SINGH(1).c	
@@ -1,45 +1,46 @@
-#include<stdio.h>
-
-void transpose(int arr[][],int n)
-{
-	int tra[n][n],i,j;
-	for(i=0;i<n;i++)
-	{
-		for(j=0;j<n;j++)
-		{
-			tra[i][j]=arr[j][i];
-		}
-	}
-	for(i=0;i<n;i++)
-	{
-		for(j=0;j<n;j++)
-		{
-			arr[i][j]=tra[i][j];
-		}
-	}
-	
-}
-int main()
-{
-	int n,i,j;
-	printf("Enter the order of matrix\n");
-	scanf("%d",&n);
-	int arr[n][n];
-	printf("Enter the elements");
-	for(i=0;i<n;i++)
-	{
-		for(j=0;j<n;j++)
-		{
-			scanf("%d",&arr[i][j]);
-		}
-	}
-	transpose(arr,n);
-	for(i=0;i<n;i++)
-	{
-		for(j=0;j<n;j++)
-		{
-			printf("%d\t",arr[i][j]);
-		}
-		printf("\n");
-	}
-}
+#include<stdio.h>
+
+int n;
+void transpose(int arr[][n])
+{
+	int tra[n][n],i,j;
+	for(i=0;i<n;i++)
+	{
+		for(j=0;j<n;j++)
+		{
+			tra[i][j]=arr[j][i];
+		}
+	}
+	for(i=0;i<n;i++)
+	{
+		for(j=0;j<n;j++)
+		{
+			arr[i][j]=tra[i][j];
+		}
+	}
+	
+}
+int main()
+{
+	int i,j;
+	printf("Enter the order of matrix\n");
+	scanf("%d",&n);
+	int arr[n][n];
+	printf("Enter the elements");
+	for(i=0;i<n;i++)
+	{
+		for(j=0;j<n;j++)
+		{
+			scanf("%d",&arr[i][j]);
+		}
+	}
+	transpose(arr);
+	for(i=0;i<n;i++)
+	{
+		for(j=0;j<n;j++)
+		{
+			printf("%d\t",arr[i][j]);
+		}
+		printf("\n");
+	}
+}
diff --git a/author-PALAK AGRAWAL(1).c b/corrected author-PALAK AGRAWAL(1).c
similarity index 59%
rename from author-PALAK AGRAWAL(1).c
rename to corrected author-PALAK AGRAWAL(1).c
index 30746ac..fdd562d 100644
--- a/author-PALAK AGRAWAL(1).c	
+++ b/corrected author-PALAK AGRAWAL(1).c	
@@ -1,17 +1,19 @@
-#include <stdio.h>
-int main()
-{
-	int arr={23,45,132,90,345,1,45,8};
-	int sum=sum_arr(arr[],8);
-	printf("Sum=%d",sum);	
-	return 0;
-}
-int sum_arr(int arr[],int n)
-{
-	int sum;
-	for(i=0;i<n;i++)
-	{
-		sum=sum+arr[i];
-	}
-	return sum;
-}
+#include <stdio.h>
+
+int sum_arr(int arr[],int n);
+int main()
+{
+	int arr[]={23,45,132,90,345,1,45,8};
+	int sum=sum_arr(arr,8);
+	printf("Sum=%d",sum);	
+	return 0;
+}
+int sum_arr(int arr[],int n)
+{
+	int sum=0,i;
+	for(i=0;i<n;i++)
+	{
+		sum=sum+arr[i];
+	}
+	return sum;
+}
diff --git a/author-PRAGYA NAINWAL(1).c b/corrected author-PRAGYA NAINWAL(1).c
similarity index 79%
rename from author-PRAGYA NAINWAL(1).c
rename to corrected author-PRAGYA NAINWAL(1).c
index c5e2604..87e1e58 100644
--- a/author-PRAGYA NAINWAL(1).c	
+++ b/corrected author-PRAGYA NAINWAL(1).c	
@@ -1,29 +1,31 @@
-#include<stdio.h>
-int main()
-{
-    #define MAX 100
-    char str1[MAX],*revstr;
-	printf("\n\n Recursion : Get reverse of a string :\n");
-	printf("------------------------------------------\n");	
-
-    printf(" Input any string: ");
-    scanf("%s",&str1);
-
-    revstr = ReverseOfString(str1);//call the function ReverseOfString
-
-    printf(" The reversed string is: %s\n\n",revstr);
-    return 0;
-}
-char ReverseOfString(char str1[])
-{
-    static int i=0;
-    static char revstr[MAX];
-    if(*str1)
-    {
-         ReverseOfString(str1+1);//calling the function ReverseOfString itself
-         revstr[i=+1] = *str1;
-    }
-    return revstr;
-}
-
-
+#include<stdio.h>
+#define MAX 100
+
+char* ReverseOfString(char str1[]);
+int main()
+{
+    char str1[MAX],*revstr;
+	printf("\n\n Recursion : Get reverse of a string :\n");
+	printf("------------------------------------------\n");	
+
+    printf(" Input any string: ");
+    scanf("%s",str1);
+
+    revstr = ReverseOfString(str1);//call the function ReverseOfString
+
+    printf(" The reversed string is: %s\n\n",revstr);
+    return 0;
+}
+char* ReverseOfString(char str1[])
+{
+    static int i=0;
+    static char revstr[MAX];
+    if(*str1)
+    {
+         ReverseOfString(str1+1);//calling the function ReverseOfString itself
+         revstr[i++] = *str1;
+    }
+    return revstr;
+}
+
+

From 43f2171c1b4b73553f2fc3595bbfa2763c9f4bf3 Mon Sep 17 00:00:00 2001
From: keshavgarg23 <kgarg_be20@thapar.edu>
Date: Wed, 16 Dec 2020 22:53:30 +0530
Subject: [PATCH 2/2] corrected all mediums

---
 author- RIYA SINGHAL(4).c                     | 18 ----
 author-PRAGYA NAINWAL(2).c                    |  6 +-
 ...).c => corrected author- RIYA SINGHAL(3).c |  4 +-
 corrected author- RIYA SINGHAL(4).c           | 18 ++++
 ...).c => corrected author- RIYA SINGHAL(5).c |  4 +-
 ...-ALI RAZA.c => corrected author-ALI RAZA.c | 34 +++----
 ...DER(2).c => corrected author-ALWINDER(2).c | 16 ++--
 ...AT(1).c => corrected author-GURSANGAT(1).c | 45 +++++----
 ...N(1).c => corrected author-HIYA MADAN(1).c | 95 ++++++++++---------
 ...N(2).c => corrected author-HIYA MADAN(2).c | 36 +++----
 ...).c => corrected author-SANCHAY JOSHI(1).c |  8 +-
 11 files changed, 145 insertions(+), 139 deletions(-)
 delete mode 100644 author- RIYA SINGHAL(4).c
 rename author- RIYA SINGHAL(3).c => corrected author- RIYA SINGHAL(3).c (56%)
 create mode 100644 corrected author- RIYA SINGHAL(4).c
 rename author- RIYA SINGHAL(5).c => corrected author- RIYA SINGHAL(5).c (62%)
 rename author-ALI RAZA.c => corrected author-ALI RAZA.c (56%)
 rename author-ALWINDER(2).c => corrected author-ALWINDER(2).c (70%)
 rename author-GURSANGAT(1).c => corrected author-GURSANGAT(1).c (74%)
 rename author-HIYA MADAN(1).c => corrected author-HIYA MADAN(1).c (93%)
 rename author-HIYA MADAN(2).c => corrected author-HIYA MADAN(2).c (84%)
 rename author-SANCHAY JOSHI(1).c => corrected author-SANCHAY JOSHI(1).c (73%)

diff --git a/author- RIYA SINGHAL(4).c b/author- RIYA SINGHAL(4).c
deleted file mode 100644
index 7ae8bb8..0000000
--- a/author- RIYA SINGHAL(4).c	
+++ /dev/null
@@ -1,18 +0,0 @@
-
-#include <stdio.h>
-
-int main()
-{
-    int x=10;
-    for(int i=0;i<5;i-=1)//INFINITE LOOP
-    {
-        int x=9;
-        printf("the value of x variable is %d",x);
-        
-    }
-    char x;//ALREADY DECLARED ABOVE
-    printf("enter any character");
-    scanf("%c",&x);
-    printf("the entered character is %c",x);
-    return 0;
-}
diff --git a/author-PRAGYA NAINWAL(2).c b/author-PRAGYA NAINWAL(2).c
index b7580be..bbb994e 100644
--- a/author-PRAGYA NAINWAL(2).c	
+++ b/author-PRAGYA NAINWAL(2).c	
@@ -1,15 +1,15 @@
 #include<stdio.h>
 //Function to calculate the maximum sum of a sub-array of a given array
-void maxSumarray(int a, int size){
+int maxSumarray(int a[], int size){
         int i;
         int max_sum_so_far=0;
         int max_ending_here = 0;
         
-        for(i=0,i<size,i++){
+        for(i=0;i<size;i++){
         	max_ending_here =+ a[i];
         	
         	if(max_ending_here < 0){
-        		max_ending_here =0
+        		max_ending_here =0;
 			}
 		    if(max_sum_so_far < max_ending_here){
 			  
diff --git a/author- RIYA SINGHAL(3).c b/corrected author- RIYA SINGHAL(3).c
similarity index 56%
rename from author- RIYA SINGHAL(3).c
rename to corrected author- RIYA SINGHAL(3).c
index 0057de6..df17d7a 100644
--- a/author- RIYA SINGHAL(3).c	
+++ b/corrected author- RIYA SINGHAL(3).c	
@@ -4,10 +4,10 @@
 int main()
 {
     int x=10;
-    for(int i=0;i<5;i-=1)
+    for(int i=0;i<5;i+=1)
     {
         int x=9;
-        printf("the value of x variable is %d",x);
+        printf("the value of x variable is %d\n",x);
         
     }
     return 0;
diff --git a/corrected author- RIYA SINGHAL(4).c b/corrected author- RIYA SINGHAL(4).c
new file mode 100644
index 0000000..1a9a469
--- /dev/null
+++ b/corrected author- RIYA SINGHAL(4).c	
@@ -0,0 +1,18 @@
+
+#include <stdio.h>
+
+int main()
+{
+    int x=10;
+    for(int i=0;i<5;i+=1)//INFINITE LOOP
+    {
+        int x=9;
+        printf("the value of x variable is %d\n",x);
+        
+    }
+    char y;//ALREADY DECLARED ABOVE
+    printf("enter any character");
+    scanf("%c",&y);
+    printf("the entered character is %c",y);
+    return 0;
+}
diff --git a/author- RIYA SINGHAL(5).c b/corrected author- RIYA SINGHAL(5).c
similarity index 62%
rename from author- RIYA SINGHAL(5).c
rename to corrected author- RIYA SINGHAL(5).c
index ba959fd..c55e4f4 100644
--- a/author- RIYA SINGHAL(5).c	
+++ b/corrected author- RIYA SINGHAL(5).c	
@@ -3,8 +3,8 @@
 int main()
 {
     int x=10;
-    for(int i=0;i<5;i-=1){
+    for(int i=0;i<5;i+=1){
         int x=9;
-    printf(x);}
+    printf("%d",x);}
     return 0;
 }
diff --git a/author-ALI RAZA.c b/corrected author-ALI RAZA.c
similarity index 56%
rename from author-ALI RAZA.c
rename to corrected author-ALI RAZA.c
index 665a17d..5c52fec 100644
--- a/author-ALI RAZA.c	
+++ b/corrected author-ALI RAZA.c	
@@ -1,17 +1,17 @@
-# include <stdio.h>
-void fun(int &x)
-{
-    *x = 30;
-}
-
-int main()
-{
-  int y = 20;
-  fun(y);
-  printf("%d", *y);
-  return 0;
-}
-
-
-
-
+# include <stdio.h>
+void fun(int *x)
+{
+    *x = 30;
+}
+
+int main()
+{
+  int y = 20;
+  fun(&y);
+  printf("%d", y);
+  return 0;
+}
+
+
+
+
diff --git a/author-ALWINDER(2).c b/corrected author-ALWINDER(2).c
similarity index 70%
rename from author-ALWINDER(2).c
rename to corrected author-ALWINDER(2).c
index 8a09f7e..4ae29e5 100644
--- a/author-ALWINDER(2).c
+++ b/corrected author-ALWINDER(2).c	
@@ -1,8 +1,8 @@
-#include<stdio.h>
-int main(){
- char *ptr = "void pointer";
- void *vptr;
- vptr = &ptr;
- printf("%s" , **&(char **)vptr);
- return 0;
-}
+#include<stdio.h>
+int main(){
+ char *ptr = "void pointer";
+ void *vptr;
+ vptr = &ptr;
+ printf("%s" , *(char **)vptr);
+ return 0;
+}
diff --git a/author-GURSANGAT(1).c b/corrected author-GURSANGAT(1).c
similarity index 74%
rename from author-GURSANGAT(1).c
rename to corrected author-GURSANGAT(1).c
index 1faf009..2b305e5 100644
--- a/author-GURSANGAT(1).c
+++ b/corrected author-GURSANGAT(1).c	
@@ -1,22 +1,25 @@
-# include <stdio.h>
-int main()
-{
-   int i = 0;
-   for (i=0; i<20; i++)
-   {
-     switch(i);
-     {
-       case 0:
-         i += 5;
-       case 1:
-         i += 2;
-       case 5:
-         i += 5;
-       default:
-         i += 4;
-         break;
-     }
-     printf("%c  "; i);
-   }
-   return 0;
+# include <stdio.h>
+int main()
+{
+   int i = 0;
+   for (i=0; i<20; i++)
+   {
+     switch(i)
+     {
+       case 0:
+         i += 5;
+         break;
+       case 1:
+         i += 2;
+         break;
+       case 5:
+         i += 5;
+         break;
+       default:
+         i += 4;
+         break;
+     }
+     printf("%d  ", i);
+   }
+   return 0;
 }
\ No newline at end of file
diff --git a/author-HIYA MADAN(1).c b/corrected author-HIYA MADAN(1).c
similarity index 93%
rename from author-HIYA MADAN(1).c
rename to corrected author-HIYA MADAN(1).c
index 3c7110f..85e2b00 100644
--- a/author-HIYA MADAN(1).c	
+++ b/corrected author-HIYA MADAN(1).c	
@@ -1,47 +1,48 @@
-/*A string is entered (For example: My name is jessie.)
-Here is C program to get its reverse in a column as output i.e.:
-jessie
-is 
-name 
-My
-Debug the following program to get the desired output.
-*/
-#include<stdio.h>
-void main()
-{
-char str[20];
-char *ptr=str,*temp;
-int i=0,j;
-scanf("%[^\n]",str);
-while(*ptr)
-{
-i++;
-ptr++;
-}
-for(j=0;j
-{
-            if(*ptr==' ')
-            {
-                  temp=ptr;
-                  ptr--;
-                  temp++;
-                  while((*temp!=' ')&&(*temp!='\0')) 
-                  {
-                       printf("%c",*temp);
-                        temp++;
-                  }
-                  printf("\n");
-            }
-            else
-            {
-                  ptr--;
-            }
-}
-while(*ptr!=' ') 
-{
-printf("%c",*ptr);
-ptr++;
-}
-getch();
-}
-
+/*A string is entered (For example: My name is jessie.)
+Here is C program to get its reverse in a column as output i.e.:
+jessie
+is 
+name 
+My
+Debug the following program to get the desired output.
+*/
+#include<stdio.h>
+#include<conio.h>
+void main()
+{
+char str[20];
+char *ptr=str,*temp;
+int i=0,j;
+scanf("%[^\n]",str);
+while(*ptr)
+{
+i++;
+ptr++;
+}
+for(j=0;j<=i;j++)
+{
+            if(*ptr==' ')
+            {
+                  temp=ptr;
+                  ptr--;
+                  temp++;
+                  while((*temp!=' ')&&(*temp!='\0')) 
+                  {
+                       printf("%c",*temp);
+                        temp++;
+                  }
+                  printf("\n");
+            }
+            else
+            {
+                  ptr--;
+            }
+}
+while(*ptr!=' ') 
+{
+printf("%c",*ptr);
+ptr++;
+}
+getch();
+}
+
diff --git a/author-HIYA MADAN(2).c b/corrected author-HIYA MADAN(2).c
similarity index 84%
rename from author-HIYA MADAN(2).c
rename to corrected author-HIYA MADAN(2).c
index ba2f3eb..4637a46 100644
--- a/author-HIYA MADAN(2).c	
+++ b/corrected author-HIYA MADAN(2).c	
@@ -1,18 +1,18 @@
-//Pallindrome of a number
-#include <stdio.h>
-#include<string.h>
-void main()
-{
-
-    char *rev;
-    char str[15];
-    scanf("%[^\n]",str);
-    int i,j;
-    for(i=strlen(str)-1,j=0;i>=0;i--,j++)
-      rev[j]=str[i];
-    rev[j]='\0';
-    if(strcmp(rev,str))
-      printf("\nThe string is not a palindrome");
-    else
-        printf("\nThe string is a palindrome");
-}
+//Pallindrome of a number
+#include <stdio.h>
+#include<string.h>
+void main()
+{
+
+    char rev[15];
+    char str[15];
+    scanf("%[^\n]s",str);
+    int i,j;
+    for(i=strlen(str)-1,j=0;i>=0;i--,j++)
+      rev[j]=str[i];
+    rev[j]='\0';
+    if(strcmp(rev,str))
+      printf("\nThe string is not a palindrome");
+    else
+        printf("\nThe string is a palindrome");
+}
diff --git a/author-SANCHAY JOSHI(1).c b/corrected author-SANCHAY JOSHI(1).c
similarity index 73%
rename from author-SANCHAY JOSHI(1).c
rename to corrected author-SANCHAY JOSHI(1).c
index d32200e..cc690d9 100644
--- a/author-SANCHAY JOSHI(1).c	
+++ b/corrected author-SANCHAY JOSHI(1).c	
@@ -2,10 +2,12 @@
 
 int gcd(int a,int b)
 {
-	if(b < 0)
-		return a;
+	if(b > a)
+		return gcd(a,b-a);
+	else if(a>b)
+		return gcd(a-b,b);
 	else 
-		return gcd(b,a%b);
+	    return a;
 }
 
 int main()