C & C++ Source Codes: February 2013

1 to N ODD Numbers [C/C++]

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
int a,b;
main()
{
      printf("Enter a Number :");
      scanf("%d",&a);
      b=0;
      while(b <= a)
      {
      if ( b != 0 && b%2 == 1)
      {
           printf("\n%d",b);
       }
       b++;
       }
      getch();
}

1 to N Even Numbers [C/C++]

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
int a,b;
main()
{
      printf("Enter a Number :");
      scanf("%d",&a);
      b=0;
      while(b <= a)
      {
      if ( b != 0 && b%2 == 0)
      {
           printf("\n%d",b);
       }
       b++;
       }
      getch();
}

Count the number of letter [C/C++]

#include<iostream>
#include<string>
using namespace std;

void main()
{
char c;
string str;
int len, count = 0;

cout << "Type the word you want: ";
getline(cin,str);

cout << "Type the letter you want to count: ";
cin >> c;

len = str.length();

for (int ctr = 0; ctr < len; ctr++)
{

if (str.at(ctr) == c)
{
count = count + 1;
}

}

cout << "\n";
cout << "There are " << count << " letters in " << str << endl;

}

Magic Square Odd Numbers Only [C/C++]

#include <iostream.h>

int main()
{
int magic[100][100];
int i, j, n, x, y;

for ( i=0 ; i<100; i++ )
for ( j=0 ; j<100 ; j++ )
   magic[i][j] = 0;

cout << "Enter value for n (odd only): ";
cin >> n;

x = 0 ; y = (n-1) / 2;
magic[x][y] = 1;

for ( i=2 ; i <= n*n ; i++ )
{
x--; y++;
if ( x < 0 && y == n )
{
   x = x + 2;
   y--;
}
if ( x < 0 ) { x = n - 1; }
if ( y >= n ) { y = 0; }
if ( magic[x][y] != 0 )
{
   x = x + 2;
   y = y - 1;
}
magic[x][y] = i;

}

for ( i = 0 ; i < n ; i++ )
{
for ( j = 0 ; j < n ; j++ )
{
   cout << magic[i][j] << "\t";
}
cout << endl;
}

return 0;
}

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C-C++ Programmer's Reference, 3rd Edition (2003).chm
Creating Games In C++ - A Step By Step Guide (2006).chm
Cryptography In C And C++ (2001).chm
Effective C++, 3rd Edition (2005).chm
Exceptional C++ - 47 Engineering Puzzles, Programming Problems, And
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Guessing Game [C/C++]

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<iostream>
main()
{
      int a,b,c,d,e,f,f1,points,ctr;
      do{
          system("cls");
          system("color 6");
          srand(time(NULL));
          b=1+rand()%10;
          ctr=3;
          e=b;
          system("cls");
      do{
                        printf("Guess a Number: ");
                        scanf("%d",&a);
                        if(a>b)
                        {
                        printf("Lower Please!!\n");
                        }
                        if(a<b)
                        {
                        printf("Higher Please!!\n");
                        }
                        ctr--;
                        if( ctr==2)
                        {
                        points=15;
                        }
                        if( ctr==1)
                        {
                        points=10;
                        }
                        if( ctr==0)
                        {
                        points=5;
                        }
                        if(a == b)
                        {
                             system("color 7");
                             printf("\n\nExcellent You Got it!!\n");
                             printf("Your Score is %d\n",points);
                        }
                        }while(a!=b && ctr!=0);
          if(a!=b && ctr==0)
          {
                  system("color 4");
                  printf("\n\nYou did not Get it !! \n%d is the Number!!",e);
                  printf("Your Score is 0");
          }
          printf("\n\n\nTry Again ? 1=Yes 2=No");
          scanf("%d",&d);
          if(d==1)
          {
                  ctr+3;
          }
          if(d==2)
          {
                  break;
          }
          }while(1);
          return(0);
}

Area of Rectangle Calculator [C/C++]

#include<stdio.h>
#include<conio.h>
main()
{
      int length,width,area;
      printf("Enter the Lenght of a rectangle:");
      scanf("%d",&length);
      printf("\nEnter the Width of a rectangle:");
      scanf("%d",&width);
      area = length*width;
      printf("\n\n\n\nThe Area of the Rectangle is %d",area);
      getch();
}

Simple Time Converter [C/C++]

#include<stdio.h>
#include<conio.h>
int a,b,c,d;
main()
{
      printf("****************************************\n");
      printf("*           Time Conversion            *\n");
      printf("*                                      *\n");
      printf("*     1] 60 secs = 1 min               *\n");
      printf("*     2] 60 min = 1 hour              *\n");
      printf("*                                      *\n");
      printf("****************************************\n");
      printf("Input 1 for sec to min ; 2 for min to hour:   ");
    /*dL1nkx*/
      scanf("%d",&a);
      if ( a == 1)
      {/*dL1nkx*/
           printf("\n\nPlease Enter SECONDS: ");
           scanf("%d",&b);
           c = b/60;
           d = b%60;
           printf("\nIn %d secs there are %d min and %d secs ",b,c,d);
      }/*dL1nkx*/
      if ( a == 2)
      {
           printf("\n\nPlease Enter MINUTES: ");
           scanf("%d",&b);
           c = b/60;
           d = b%60;
           printf("\nIn %d mins there are %d hour and %d mins ",b,c,d);
      }
      if (a != 1 && a!=2)
      {
            printf("Please Enter 1 or 2 Only");/*dL1nkx*/
      }
      getch();
}

Simple Time Converter [C/C++]

Guessing Game with Level [C/C++]

#include<iostream>
#include<stdlib.h>
#include<stdio.h>
#include<conio.h>
main()
{
      int a,b,c,d,e,f,f1,points,ctr;
      do{
          system("cls");
          system("color 6");
          system("cls");
          do{
                        system("cls");
                        printf("Guessing Game\n");
                        /*dL1nk*/
                        printf("Level 1 = 1-10\n");
                        /*dL1nk*/
                        printf("Level 2 = 1-20\n");
                        printf("Level 3 = 1-30\n");
                        /*dL1nk*/
                        printf("Level 4 = 1-40\n");
                        printf("Level 5 = 1-50\n");
                        printf("\n\nPlease Enter Level ==>");
                        scanf("%d",&e);
                        if( e==1)
                        {
                            f=10;
                            f1=1;
                        }
                        if( e==2)
                        {
                            f=30;
                            f1=2;
                        }
                        if( e==3)
                        {
                        /*dL1nk*/
                            f=30;
                            f1=3;
                        }
                        if( e==4)
                        {
                            f=40;
                            f1=4;
                        }
                        if( e==5)
                        /*dL1nk*/
                        {
                            f=50;
                            f1=5;
                        }
                        if( e>5)
                        {
                            system("cls");
                        }
          }while(e!=1 && e!=2 && e!=3 && e!=4 && e!=5);
          srand(time(NULL));
        /*dL1nk*/
          b=1+rand()%f;
          ctr=3;
          e=b;
        /*dL1nk*/
          system("cls");
          do{
                        printf("\nGuess a Number: ");
                        scanf("%d",&a);
                        if(a>b)
                        {
                        printf("Lower Please!!\n");
                        }
                        /*dL1nk*/
                        if(a<b)
                        {
                        printf("Higher Please!!\n");
                        }
                        /*dL1nk*/
                        ctr--;
                        if( ctr==2)
                        {
                        points=15;
                        }
                        if( ctr==1)
                        {
                        points=10;
                        }
                        if( ctr==0)
                        {
                        points=5;
                        }
                        if(a == b)
                        /*dL1nk*/
                        {
                             system("color 7");
                             printf("\n\nExcellent You Got it!!\n");
                             printf("Your Score is %d\n",points);
                             printf("\nLevel of Difficluty %d = 1-%d",f1,f);
                        }
                        }while(a!=b && ctr!=0);
          if(a!=b && ctr==0)
          {
                  system("color b");
                  printf("\n\nYou did not Get it !! \n%d is the Number!!\n",e);
                  printf("Level of Difficluty %d = 1-%d",f1,f);
                /*dL1nk*/
                  printf("\nYour Score is 0");
          }
          printf("\n\nTry Again ? 1=Yes 2=No ==>> ");
          scanf("%d",&d);
        /*dL1nk*/
          if(d==1)
          {
                  ctr+3;
          }
          if(d==2)
        /*dL1nk*/
          {
                  break;
          }
          }while(1);
        /*dL1nk*/
          return(0);
}

Palindrome [C/C++]

//Coded by : dL1nkx
//Copyright: dL1nkx.blogspot.com
#include<stdio.h>
#include<conio.h>
#include<string.h>
main()
{
      char o[15],p[15],q[15];
      printf("Please Enter a Word ");
      scanf("%s",o);
      strcpy(p,strrev(o));
      printf("%s",strrev(o));
      if(strcmpi(o,p) == 0)
                      printf("\nIt is Palindrome");
      else
      printf("\nNot Palindrome");
      getch();
}

Factorial of a Number [C/C++]

//Coded by : dL1nkx
//Copyright: dL1nkx.blogspot.com
#include<stdio.h>
int main ()
{
int i,num,factorial=1;
printf("ENTER THE NUMBER");
scanf("%d",&num);
if(num<0)
printf("Factorial not possible");
else
{
for (i=1;i<=num;i++)
{factorial=factorial*i;}
printf("\nFACTORIAL=%d\n",factorial);
}
return 0;
}

Factors of a Number [C/C++]

//Coded by : dL1nkx
//Copyright: dL1nkx.blogspot.com
#include <stdio.h>
int main()
{
int x,y,z;
printf("enter the number: ");
scanf("%d",&x);
printf("The factors are as follow:\n");
for (y=1;y<=x;y++)
{ if (x%y==0)
printf("%d\n",y);}// loop end
return 0;
}

ASCII code way 2 [C/C++]

//Coded by : dL1nkx
//Copyright: dL1nkx.blogspot.com
#include<stdio.h>
int main()
{
int x;
char character;
printf("ENTER THE CHARACTER\n");
scanf("%c",&character);
x=character;
printf("THE ASCII VALUE OF %c is %d\n",character,x);
return 0;
}

ASCII codes way1 [C/C++]

//Coded by : dL1nkx
//Copyright: dL1nkx.blogspot.com
#include<stdio.h>
int main()
{
int z;
printf("ENTER THE CHARACTER\n");
z=getchar();
printf("THE ASCII VALUE OF CHARACTER is %d\n",z);
return 0;
}

Grade Calculator (5 Subjects) [C/C++]

//Coded by : dL1nkx
//Copyright: dL1nkx.blogspot.com
#include<stdio.h>
int main () {
int sub1,sub2,sub3,sub4,sub5,total;
float average;
printf("ENTER THE NUMBERS IN 5 SUBJECTS OF THE STUDENT\n");
scanf("%d%d%d%d%d",&sub1,&sub2,&sub3,&sub4,&sub5);
   total=sub1+sub2+sub3+sub4+sub5;
   average=total/5;
   if(average>=80)
     {printf("STUDENT HAS GOT A GRADE\n");}
else if(average>=70)
     {printf("STUDENT HAS GOT B GRADE\n");}
else if(average >=60)
     {printf("STUDENT HAS GOT C GRADE\n");}
else if(average>=50)
     {printf("STUDENT HAS GOT D GRADE\n");}
else if(average>=40)
     {printf("STUDENT HAS GOT E GRADE\n");}
else
     {printf("STUDENT HAS FOT F GRADE\n");}
return 0;
}