Example of function in c

Example of function in c:-

below are the some example of function in c by these examples you can easily understand the function .

1) Program using function named  ‘sum‘ that add two input integer and return their sum. 

#include<stdio.h>



// Global declaration of sum function

int sum(int,int); 
int main()
{
     int a,b,c;
     printf("Enter the value of a and b");
     scanf("%d%d",&a,&b);
     c=sum(a,b);   // function calling 
     printf("sum of a and b is %d",c);
     return 0;


}
// End of main function 
// function definition of sum




int sum(int x,int y)
//where x and y are formal argument 
{
    int z;
    z=x+y;
    return z;
}

Output :–

Enter the value of a and b
10 5
sum of a and b is 15

2.  program using a function that  compare two input value 

#include<stdio.h>
int main()
{
    void  compare(int, int);//function declaration
    int a,b;
    printf("Enter the value of a and b ");
    scanf("%d%d",&a,&b);
    compare(a,b); // function calling
    return 0; 
}// end of main function




// function definition compare 
void compare(int x,int y)
{
    if(x<y)
    {
        printf("%d is greater than %d ",x,y);
    }
    else 
    {
        if(x==y)
        {
            printf("%d is equal to %d ",x,y);
        }
        else 
        {
          printf(" %d is smaller than %d",x,y); 
        }
    }
}

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Key points:-

Cracking the coding interview:-

Array and string:-

• Is Unique
  
• Check Permutation
  
• Urlify
  
• One away
  
• String Compression
  
• Zero matrix
  

Tree and graph:-

Hackerearth Problems:-

•  Playing With Characters | Hackerrank practice problem solution
• Sum and Difference of Two Numbers | hackerrank practice problem solution
  
• Functions in C | hackerrank practice problem solution
  
• Pointers in C | hackerrank practice problem solution
  
• Conditional Statements in C | Hackerrank practice problem solution
  
• For Loop in C | hackerrank practice problem solution
  
• Sum of Digits of a Five Digit Number | hackerrank practice problem solution
  
• 1D Arrays in C | hackerrank practice problem solution
  
• Array Reversal | hackerrank practice problem solution
  
• Printing Tokens | hackerrank practice problem solution
  
• Digit Frequency | hackerrank practice problem solution
  
• Calculate the Nth term | hackerrank practice problem solution

Data structure:-

•   Program to find cycle in the graph
• Implementation of singly link list
• Implementation of queue by using link list
• Algorithm of quick sort
• stack by using link list
• program to find preorder post order and inorder of the binary search tree
• Minimum weight of spanning tree
• Preorder, inorder and post order traversal of the tree

 MCQs:-