diff --git a/README.md b/README.md
index 49ef854c..c01ca966 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,36 @@
 # C-basicprograms
-This repo contains basics programs in c programming language
+## This repo contains basics programs in c programming language.
+| Program No.| Question |
+| ------- | ------ |
+| Program-01 | Program to print pattern  |
+| Program-02 | Program to check whether the given number is prime or not |
+| Program-03 | Program to find largest of three number using simple if condition |
+| Program-04 | Program to find largest of three number using if-else condition |
+| Program-05 | Program to find largest of three number using nested if condition |
+| Program-06 | Program to find largest of three number using ternary operator |
+| Program-07 | Program to check whether the given year is leap or not |
+| Program-08 | Program to convert number into year, months and days |
+| Program-09 | Program to check two number are equal without logical operator |
+| Program-10 | Program to find square and half of given number without using built-in function and arithmetic operator|
+| Program-11 | Program on arithmetic operators |
+| Program-12 | Program on relational operators |
+| Program-13 | Program on bit-wise operator. |
+| Program-14 | Program on increment and decrement operator. |
+| Program-15 | Program to find sum of digits between given range which are divisible by 3  |
+| Program-16 | Program to check whether the given number is neon or not |
+| Program-17 | Program to check whether the given number is prefect or not |
+| Program-18 | Program to check given number is Armstrong or not |
+| Program-19 | Program to find power of a given number |
+| Program-20 | Program to convert datatype explicitly |
+| Program-21 | Program to check whether the given number is prime or not |
+| Program-22 | Program to find GCD and LCM of given two number |
+| Program-23 | Program to find number of digits in a given number |
+| Program-24 | Program to print the pattern |
+| Program-25 | Program to print the pattern |
+| Program-26 | Program to print the pattern |
+| Program-27 | Program to print the pattern |
+| Program-28 | Program to print the pattern |
+| Program-29 | Program to print the pattern |
+| Program-30 | Program to print the pattern |
+| Program-31 | Program to take the details of student and print the details of students using array and to add details of new students into the existing array |
+| Program-32 | Program to take the details of student and print the details |
diff --git a/program-20/program.c b/program-20/program.c
index bfe8670d..ed865cda 100644
--- a/program-20/program.c
+++ b/program-20/program.c
@@ -1,8 +1,20 @@
-#include<stdio.h>
-void main()
-{
-if(printf("hello world\n"))
-{
+#include <stdio.h>
+#include <stdlib.h>
 
-}
+int main()
+{ int a=7,b=2;
+   // printf("enter two number !\n");
+    //scanf("%d%d",&a,&b);
+    printf("%d",a/b);
+
+    printf("%d\n",(float)a/b);
+    printf("%d\n",(float)a/(float)b);
+    printf("%d\n",a/(float)b);
+
+    printf("%f\n",a/b);
+    printf("%f\n",(float)(a/b));
+    printf("%f\n",(float) a/b);
+    printf("%f\n",(float)a/(float)b);
+    printf("%f\n",a/(float)b);
+    return 0;
 }
diff --git a/program-31/a.out b/program-31/a.out
new file mode 100755
index 00000000..22b5b248
Binary files /dev/null and b/program-31/a.out differ
diff --git a/program-31/program.c b/program-31/program.c
index f43964bc..43a5fffb 100644
--- a/program-31/program.c
+++ b/program-31/program.c
@@ -12,7 +12,7 @@ int main()
     scanf("%d",&n);
     for(i=1;i<=n;i++)
     {
-        printf("Enter the details of student-%d\n",i);
+        printf("Enter the details of student - %d\n",i);
         printf("Enter the name of the student\n");
        scanf("%s",&stud[i].n);
         printf("Enter USN\n");
@@ -20,13 +20,13 @@ int main()
         printf("Enter total marks\n");
         scanf("%d",&stud[i].m);
     }
-    printf("|\tSl.no\t|\tName\t|\tUSN\t\t|\tMark\t|\n");
+    printf("|\tSl.no\t|\tName\t\t|\tUSN\t\t|\tMark\t|\n");
     for(i=1;i<=n;i++)
     {
-        printf("|\t%d\t|\t%s\t|\t%s\t|\t%d\t|\n",i,stud[i].n,stud[i].u,stud[i].m);
+        printf("|\t%d\t|\t%-10s\t|\t%s\t|\t%d\t|\n",i,stud[i].n,stud[i].u,stud[i].m);
     }
     printf("Enter the details of new student\n");
-    printf("Enter the name\n");
+    printf("Enter the name\n");   //preferred to enter equal length of name
     scanf("%s",&stud2.n);
     printf("Enter the USN\n");
     scanf("%s",&stud2.u);
@@ -40,10 +40,10 @@ int main()
         stud[i+1]=stud[i];
     }
     stud[p]=stud2;
-    printf("|\tSl.no\t|\tName\t|\tUSN\t\t  |\tMark\t|\n");
+    printf("|\tSl.no\t|\tName\t\t|\tUSN\t\t  |\tMark\t|\n");
     for(i=1;i<=n+1;i++)
     {
-         printf("|\t%d\t|\t%s\t|\t%s\t|\t%d\t|\n",i,stud[i].n,stud[i].u,stud[i].m);
+         printf("|\t%d\t|\t%-10s\t|\t%s\t|\t%d\t|\n",i,stud[i].n,stud[i].u,stud[i].m);
 
     }
 
diff --git a/program-32/program.c b/program-32/program.c
new file mode 100644
index 00000000..26b3f3e9
--- /dev/null
+++ b/program-32/program.c
@@ -0,0 +1,29 @@
+#include <stdio.h>
+struct student
+{
+char n[100];
+char u[100];
+int m;
+}stud[10],stud2;
+int main()
+{
+    int n,i,p=0;
+    printf("Enter the number of student\n");
+    scanf("%d",&n);
+    for(i=1;i<=n;i++)
+    {
+        printf("Enter the details of student - %d\n",i);
+        printf("Enter the name of the student\n");
+       scanf("%s",&stud[i].n);
+        printf("Enter USN\n");
+        scanf("%s",&stud[i].u);
+        printf("Enter total marks\n");
+        scanf("%d",&stud[i].m);
+    }
+    printf("|\tSl.no\t|\tName\t\t|\tUSN\t\t|\tMark\t|\n");
+    for(i=1;i<=n;i++)
+    {
+        printf("|\t%d\t|\t%-10s\t|\t%s\t|\t%d\t|\n",i,stud[i].n,stud[i].u,stud[i].m);
+    }
+    return 0;
+}