Arithmetic Program

Write a program to print all numbers between 1 and 100 which are divisible by 9

Arithmetic Operation in C using Pointer Variable

Write a program which perform arithmetic operation (+, -, *, / , %) which would be an example of demonstrating pointer arithmetic

Pointer Array in C

Provide any example program with the use of pointer and array at a time.

void printArray(int *ptr, size_t length);            
{         
    //for statment to print values using array             
    size_t i = 0;
    for( ; i < length; ++i )      
    printf("%d", ptr[i]);        
}   

 void printString(const char *ptr);            
{         
    //for statment to print values using array             
    for( ; *ptr!=NULL; ++ptr)        
    printf("%c", *ptr);        
}         

int main()    
{    
    int array[6] = {2,4,6,8,10};     
    const char* str = "Hello World!";
    printArray(array, 6);    
    printString(str);
    return 0;     
}

Recursive Function in C

Write a program to calculate factorial of a given integer number. Use recursive function

String Programming in C

Write a program to count vowel, consonant and word from a given string.

 main()
{
  char line[100];
  int i,con=0,vowel=0,word=0;
  printf("Enter your string :\n");
  gets(line);
for(i=0;line[i]!='\0';++i)
  {
   if(line[i]=='a' || line[i]=='e' || line[i]=='i' ||
    line[i]=='o' || line[i]=='u' || line[i]=='A' ||
    line[i]=='E' || line[i]=='I' || line[i]=='O' || line[i]=='U')
    ++vowel;
  else if((line[i]>='a' && line[i]<='z')||(line[i]>='A' && line[i]<='Z'))
    ++con;
else if(line[i]==' ')word++;
}
  printf("\nVOWEL : %d",vowel);
  printf("\nCONSONENT : %d",con);
  printf("\nWORD : %d",(word+1));
}

Function Programming : Fibonacci in C

Write a program to generate a Fibonacci Series. Use function.

Hints: First few numbers of series are 0, 1, 1, 2, 3, 5, 8 etc, Except first two numbers in series every other numbers are the sum of two previous numbers. For example 5 = 2 + 3 (addition of 2 & 3).

Source Code in C:
#include<stdio.h>
void fibonacci(int m, int n);
int main( )
{
     int a=0, b=1;
     printf("Fibonacci series is :\n\n");
     fibonacci(a, b);
}
void fibonacci(int m, int n)
{
      int sum=0, i;
      for(i=0; i<=50; i++)
      {
          sum=m+n;
          printf("  %d",sum);
          m=n;
          n=sum;
      }
}

Function Programming : divisible by 9 in C

Write a program to check Number which is dividable by 9 or not. Use function to call and return the value.
 
Source Code in C:
#include <stdio.h>
void check_divisible(int);
int main( )
{
     int n, result;
     printf("\n Enter the number to check");
     scanf("%d", &n);
     result=check_divisible(n);
     return 0;
}

void check_divisible(int a)
{
     int i=9;
     if (a%9 = =0)
          printf("\n This is divisible by 9");
     else
          printf("\n This is not divisible by 9");
}

Function Programming : Area of Circle in C

Write a program to find the area of a Circle. Use function to find area where area = pi * r ^ 2( r means radius, ^ means power and the value of pi is 3.144) .

Source Code in C:

#include<stdio.h>
float checkArea(float radius)
{
      float area;
      area=3.14159*(radius*radius) ;
      return area;
}
int main()
{
      float r, area_of_circle=0;
      printf ("\nEnter Radius: ");
      scanf ("%f", &r);
      area_of_circle=checkArea(r);
      printf ("\nArea is: %f", area_of_circle);
}