New issue found.

C++/Program_25/Queues_Using_Linked_Lists.cpp

@@ -0,0 +1,82 @@
+//Queues Using Linked List 
+#include<iostream>
+using namespace std;
+
+class node{
+    public:
+    int data;
+    node *link;
+}*front=NULL,*rear=NULL;
+
+void enqueue(int x){
+    node *t;
+    t = new node;
+    if(t==NULL)
+    cout<<"Queue is Full"<<endl;
+    else{
+        t->data = x;
+        t->link = NULL;
+    }
+    if(front==NULL){
+        front = rear = t;
+    }
+    else{
+        rear->link=t;
+        rear = t;
+    }
+}
+
+int dequeue(){
+    node *p;
+    int x = -1;
+    if(front==NULL)
+    cout<<"Queue is Empty!"<<endl;
+    else{
+        front = p->link;
+        x = p->data;
+        delete p;
+    }
+    return x;
+}
+
+void display(){
+    node *p=front;
+    while(p){
+        cout<<p->data<<" ";
+        p = p->link;
+    }
+    cout<<endl;
+}
+
+int main(){
+    int x;
+    char c;
+    while(1){
+    cout<<"Choose an Operation : \n1.Enqueue\n2.Dequeue\n3.Display\n4.Exit"<<endl;
+    cin>>c;
+    switch (c)
+    {
+    case '1':
+        cout<<"Enter the element : ";
+        cin>>x;
+        enqueue(x);
+        break;
+    case '2':
+        x=dequeue();
+        if(x!=-1)
+        cout<<"Deleted element is "<<x<<endl;
+        break;
+    case '3':
+        display();
+        break;
+    case '4':
+        return 0;
+        break;
+    default:
+        cout<<"Enter a valid option :("<<endl;
+        break;
+    }
+    }
+
+    return 0;
+}

C++/Program_25/README.md

@@ -0,0 +1 @@
+Program to implement Queue DataStructure Using Linked Lists

C++/README.md

@@ -14,3 +14,4 @@
 | Program-15 | Program to find modular exponentiation.
 | Program-19| To check whether a number is in palindrome or not
 | Program-24 | Program to convert Hexa-Decimal number to Decimal number 
+| Program-25 | Program to Implement Queue Data Structure Using Linked Lists

C/program-61/program.c

@@ -1,58 +1,41 @@
-/*
-  This Program calulates all the prime between the range of numbers
-  includes the numbers which is provided.
-
-  For e.g:   2  7
-  Prime Numbers are : 2 3 5 7
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
+//C Program For Bubble Sort In Ascending And Descending Order//
 
-char primecheck(int);
+#include<stdio.h>
 
 int main()
 {
-    int i,num1,num2,cases;
-    char ans;
-    printf("Enter Number of Test Cases: ");
-    scanf("%d",&cases);
-    while (cases--)
-    {
-        printf("Enter First Number: ");
-        scanf("%d",&num1);
-        printf("Enter Second Number: ");
-        scanf("%d",&num2);
-
-        printf("Answer: ");
-        for(i=num1;i<=num2;i++)
-        {
-            ans = primecheck(i);
-            if (ans == 'y')
-                printf("%d ",i);
-        }
-        printf("\n");
-    }
-    return 0;
-}
+
+  int array[100], n, c, d, swap;
 
-char primecheck(int num)
-{
-    int i;
-    if (num == 0 || num == 1)
-        return 'n';
-    else
+  printf("Enter number of elements\n");
+  scanf("%d", &n);
+
+  printf("Enter %d integers\n", n);
+
+  for (c = 0; c < n; c++)
+    scanf("%d", &array[c]);
+
+  for (c = 0 ; c < ( n - 1 ); c++)
+  {
+    for (d = 0 ; d < n - c - 1; d++)
     {
-        for(i=(num-1);i>1;i--)
-        {
-            if(num%i == 0)
-            {
-                return 'n';
-            }
-            else
-                continue;
-        }
-        return 'y';
+      if (array[d] > array[d+1])
+      {
+        swap       = array[d];
+        array[d]   = array[d+1];
+        array[d+1] = swap;
+      }
     }
+  }
+
+  printf("Sorted list in ascending order:\n");
 
-}
+  for ( c = 0 ; c < n ; c++ )
+     printf("%d\n", array[c]);
+
+  printf("\nSorted list in descending order:\n");
+
+  for ( c = n-1 ; c >= 0; c-- )
+     printf("%d\n", array[c]);
+  return 0;
+

C/program-74/program.c

@@ -0,0 +1,15 @@
+#include<stdio.h>  
+ int main()    
+{    
+int n, reverse=0, rem;    
+printf("Enter a number: ");    
+  scanf("%d", &n);    
+  while(n!=0)    
+  {    
+     rem=n%10;    
+     reverse=reverse*10+rem;    
+     n/=10;    
+  }    
+  printf("Reversed Number: %d",reverse);    
+return 0;  
+}   

C/program-74/readme.md

@@ -0,0 +1 @@
+C Program to reverse a given number

C/program-77/program.c

@@ -0,0 +1,51 @@
+#include <stdio.h>
+
+int main()
+{
+int m, n, p, q, c, d, k, sum = 0;
+int mat1[10][10], mat2[10][10], mat3[10][10];
+
+printf(“Enter number of rows and columns of mat1 matrix\n”);
+scanf(“%d%d”, &m, &n);
+printf(“Enter elements of matrix 1\n”);
+
+for (c = 0; c < m; c++)
+for (d = 0; d < n; d++)
+scanf(“%d”, &mat1[c][d]);
+
+printf(“\nEnter number of rows and columns of mat2 matrix\n”);
+scanf(“%d%d”, &p, &q);
+
+if (n != p)
+printf(“\nThe matrices can’t be multiplied with each other.\n”);
+else
+{
+printf(“\nEnter elements of matrix2\n”);
+
+for (c = 0; c < p; c++)
+for (d = 0; d < q; d++)
+scanf(“%d”, &mat2[c][d]);
+
+for (c = 0; c < m; c++) {
+for (d = 0; d < q; d++) {
+for (k = 0; k < p; k++) {
+sum = sum + mat1[c][k]*mat2[k][d];
+}
+
+mat3[c][d] = sum;
+sum = 0;
+}
+}
+
+printf(“\nProduct of the matrices:\n”);
+
+for (c = 0; c < m; c++) {
+for (d = 0; d < q; d++)
+printf(“%d\t”, mat3[c][d]);
+
+printf(“\n”);
+}
+}
+
+return 0;
+}

C/program-77/readme.md

@@ -0,0 +1 @@
+C program to multiply matrices

C/program-78/program.c

@@ -0,0 +1,24 @@
+#include<stdio.h>
+
+int main()
+{
+    printf("\n\n\t\tStudytonight - Best place to learn\n\n\n");
+    int h, b;
+    float area;
+    printf("\n\nEnter the height of the Triangle: ");
+    scanf("%d", &h);
+    printf("\n\nEnter the base of the Triangle: ");
+    scanf("%d", &b);
+
+    /*
+        Formula for the area of the triangle = (height x base)/2
+
+        Also, typecasting denominator from int to float 
+        to get the output in float
+    */
+    area = (h*b)/(float)2;
+    printf("\n\n\nThe area of the triangle is: %f", area);
+
+    printf("\n\n\t\t\tCoding is Fun !\n\n\n");
+    return 0;
+}

C/program-78/readme.md

@@ -0,0 +1 @@
+C Program to find the Area of Triangle using Base and Height

C/program-79/program.c

@@ -0,0 +1,22 @@
+#include<stdio.h>
+
+void main()
+{
+    printf("\n\n\t\tStudytonight - Best place to learn\n\n\n");
+    float principal_amt, rate, simple_interest;
+    int time;
+    printf("Enter the value of principal amount, rate and time\n\n\n");
+    scanf("%f%f%d", &principal_amt, &rate, &time);
+
+    // considering rate is in percentage
+    simple_interest = (principal_amt*rate*time)/100.0;
+
+    // usually used to align text in form of columns in table
+    printf("\n\n\t\t\tAmount = Rs.%7.3f\n ", principal_amt);
+
+    printf("\n\n\t\t\tRate = Rs.%7.3f\n ", rate);
+    printf("\n\n\t\t\tTime= %d years \n", time);
+    printf("\n\n\t\t\tSimple Interest = Rs.%7.3f\n ", simple_interest);
+    printf("\n\n\t\t\tCoding is Fun !\n\n\n");
+    return 0;
+}

C/program-79/readme.md

@@ -0,0 +1 @@
+C Program to calculate Simple Interest

C/program-80/program.c

@@ -0,0 +1,58 @@
+/*
+  This Program calulates all the prime between the range of numbers
+  includes the numbers which is provided.
+
+  For e.g:   2  7
+  Prime Numbers are : 2 3 5 7
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+char primecheck(int);
+
+int main()
+{
+    int i,num1,num2,cases;
+    char ans;
+    printf("Enter Number of Test Cases: ");
+    scanf("%d",&cases);
+    while (cases--)
+    {
+        printf("Enter First Number: ");
+        scanf("%d",&num1);
+        printf("Enter Second Number: ");
+        scanf("%d",&num2);
+
+        printf("Answer: ");
+        for(i=num1;i<=num2;i++)
+        {
+            ans = primecheck(i);
+            if (ans == 'y')
+                printf("%d ",i);
+        }
+        printf("\n");
+    }
+    return 0;
+}
+
+char primecheck(int num)
+{
+    int i;
+    if (num == 0 || num == 1)
+        return 'n';
+    else
+    {
+        for(i=(num-1);i>1;i--)
+        {
+            if(num%i == 0)
+            {
+                return 'n';
+            }
+            else
+                continue;
+        }
+        return 'y';
+    }
+
+}