diff --git a/issue1.c b/issue1.c
index 05a1df5..42476b0 100644
--- a/issue1.c
+++ b/issue1.c
@@ -5,16 +5,17 @@
 #include<stdlib.h>
 
 char* reverse(char* str){
-    char* rev = (char*)malloc(sizeof(str));
     int size = strlen(str);
+    char* rev = (char*)malloc(size+1);
     for(int i=0;i<size;i++){
-        rev[i] = str[i];
+        rev[i] = str[size-i-1];
     }
+    rev[size]='\0';
     return rev;
 }
 
 int main(){
-    char* str = "Forward";
-    str = reverse(str);
-    printf("%s\n", str);
-}
\ No newline at end of file
+    char str[] = "Forward";
+    char* reversedStr = reverse(str);
+    printf("%s\n", reversedStr);
+}
diff --git a/issue2.c b/issue2.c
index 135c3ff..344dc12 100644
--- a/issue2.c
+++ b/issue2.c
@@ -3,11 +3,11 @@
 #include <stdio.h>
 
 int main(){
-    int even = 0;
-    for(int i = 0; i <= 20; i++){
-        even *= 2;
+    int even;
+    for(int i = 2; i <= 40; i+=2){
+        even=i;
         printf("%d\t", even);
     }
     printf("\n");
     return 0;
-}
\ No newline at end of file
+}
diff --git a/issue3.c b/issue3.c
index 7a9f3df..7c9e132 100644
--- a/issue3.c
+++ b/issue3.c
@@ -9,8 +9,9 @@ int main(){
     char new[50] = ""; 
 
     for(int i = 0; i < 6; i++){
-        new[i] =  z;
+        new[i] =  z[i];
     }
+    new[6]='\0';
 
     for(int i = 0; i < 6; i++){
         printf("%c", new[i]);
@@ -18,4 +19,4 @@ int main(){
     printf("\n");
     return 0;
 
-}
\ No newline at end of file
+}
diff --git a/issue4.c b/issue4.c
index 5fe7765..259936e 100644
--- a/issue4.c
+++ b/issue4.c
@@ -3,8 +3,8 @@
 #include <stdio.h>
 
 void sort(int a[], int b){
-    for(int i = 0; i < b; i++){
-        for(int j = 1; j < b; j++){
+    for(int i = 0; i < b-1; i++){
+        for(int j = i+1; j < b; j++){
             if(a[i] > a[j]){
                 int temp = a[i];
                 a[i] = a[j];
@@ -22,4 +22,4 @@ int main(){
     for(int i = 0; i < 6; i++){
         printf("%d", numbers[i]);
     }
-}
\ No newline at end of file
+}
diff --git a/issue5.c b/issue5.c
index 2ff3dd5..7f07a1d 100644
--- a/issue5.c
+++ b/issue5.c
@@ -13,17 +13,20 @@ int main(void){
                 printf("%d\t", 2*i);
             }
             printf("\n");
+            break;
         case 2 : 
             for(int i=1;i<6;i++){
                 printf("%d\t", 3*i);
             }
             printf("\n");
+            break;
         case 3 : 
             for(int i=1;i<6;i++){
                 printf("%d\t", 4*i);
             }
             printf("\n");
+            break;
         default :
                 printf("Choose a valid option!!!\n");
     }
-}
\ No newline at end of file
+}
diff --git a/issue6.c b/issue6.c
index 94a0656..9aecd6e 100644
--- a/issue6.c
+++ b/issue6.c
@@ -6,8 +6,8 @@ int main(void){
     char* str1 = "This is a string";
     char* str2 = "This is another string";
 
-    if(strcmp(str1, str2))
+    if(strcmp(str1, str2)==0)
         printf("Strings are same.\n");
     else
         printf("Strings are not same.\n");
-}
\ No newline at end of file
+}
diff --git a/issue7.c b/issue7.c
index fc3d230..8e30cd0 100644
--- a/issue7.c
+++ b/issue7.c
@@ -7,5 +7,5 @@ int main(void){
     int a = 5;
     int* b = (int*)malloc(sizeof(int));
     *b = 7;
-    printf("%d\n", (a+b));
-}
\ No newline at end of file
+    printf("%d\n", (a+*b));
+}
diff --git a/issue8.c b/issue8.c
index 4876a9b..8a5517f 100644
--- a/issue8.c
+++ b/issue8.c
@@ -5,8 +5,8 @@
 #include<string.h>
 int main(void){
     char* str = "Welcome to IEEE\n";
-    for(int i=0;i<100;i++){
+    for(int i=0;str[i]!='\0';i++){
         printf("%c", str[i]);
     }
     printf("\n");
-}
\ No newline at end of file
+}
diff --git a/issue9.c b/issue9.c
index f28b571..82f5f90 100644
--- a/issue9.c
+++ b/issue9.c
@@ -2,7 +2,7 @@
 
 #include<stdio.h>
 int factorial(int n){
-    if(n == 2)
+    if(n == 0||n==1)
         return 1;
     else
         return n*factorial(n-1);
@@ -11,4 +11,4 @@ int factorial(int n){
 int main(void){
     int num = 8;
     printf("%d\n", factorial(num));
-}
\ No newline at end of file
+}