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LET US C




 COMPUTER GAYN


LET US C


Q1. write a C program to calculate sum of array element?

ans:-

#include <stdio.h>

int main()

{

    int a[1000],i,n,sum=0;

   

    printf("Enter size of the array : ");

    scanf("%d",&n);

 

    printf("Enter elements in array : ");

    for(i=0; i<n; i++)

    {

        scanf("%d",&a[i]);

    }

 

    

    for(i=0; i<n; i++)

    {

         

        sum+=a[i];

    }

     printf("sum of array is : %d",sum);

 

    return 0;

}

                                                                                       

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ALGORITHM

 step1:- start

step2:- declare array

step3:-input Num,n

step4:-i<n  

            sum=sum+array[num]

step5:- else 

             display sum

step6:- stop


FLOWCHART




Q2. what is Function?

ans:-

A function is a set of statements that take inputs, do some specific computation and produces output.

The idea is to put some commonly or repeatedly done task together and make a function so that instead of writing the same code again and again for different inputs, we can call the function.


Q3. what is pointer? Explain with suitable example?

ans:-

he Pointer in C, is a variable that stores address of another variable. A pointer can also be used to refer to another pointer function. A pointer can be incremented/decremented, i.e., to point to the next/ previous memory location. The purpose of pointer is to save memory space and achieve faster execution time.

How to Use Pointers in C

If we declare a variable v of type int, v will actually store a value.

v is equal to zero now.


Q4.what do you mean by structure?

ans:-Structure is a group of variables of different data types represented by a single name. Lets take an example to understand the need of a structure in C programming.

We can solve this problem easily by using structure. We can create a structure that has members for name, id, address and age and then we can create the variables of this structure for each student. 

Q5.implement the c program to find sum of 2D array?

ans:-

#include<stdio.h>

int main()

{


int a[3][2];//array declaration( 3*2=6 element)

int i,j,sum=0;

printf("enter 6 element in 2D array \n");

for(i=0;i<=2;i++)

{

for(j=0;j<1;j++)

{

scanf("%d",&a[i][j]);

}

}

for (i=0;i<=2;i++)

{

for(j=0;j<=1;j++)

{

sum=sum+a[i][j];

}

}

printf("sum of all array element are =%d",sum);

return 0;

}


ALGORITHM


Step1:- start

step2:- enter the value of first array

step3:- enter the value of second array

step4:-sum=sum+a[i][j]

           add the array

step5:-display the sum of array

step6:- stop


FLOWCHART



Q6.  implement the c program to read 5 elements of a 1-D array and 

display those with their index on output screen?

ans:-

#include<stdio.h> 

int main()

{

       int arr[5]={21,31,41,51,61}; //static initilazation of 1D array

       int i;

       

       for(i=0;i<=4;i++)

       {

       printf("array index %d having value %d",i,arr[i]);

       }

       return 0;

       

}

ALGORITHM



Step1:-start

step2:-int arr[5]

step3:- int i

           print the element in array

step4:-i<5

             print element %d ,arr[i]

             i++

step5:- else 

              print element in array ,i=0

step6:-stop


FLOWCHART














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