Let Us C (Chapter 8 : Arrays) : Program-1

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(a) Twenty-five numbers are entered from the keyboard into an array. The number to be searched is entered through the keyboard by the user. Write a program to find if the number to be searched is present in the array and if it is present, display the number of times it appears in the array.
let us c chapter 8 array problem 1
// Let Us C (Chapter 8 : Arrays) : Program-1
/* Twenty-five numbers are entered from the keyboard into an array. The number to be searched is entered through 
the keyboard by the user. Write a program to find if the number to be searched is present in the array and if it 
is present, display the number of times it appears in the array */
#include<stdio.h>
int arr[25],i,num,j=0,count=0;
void main()
{
    clrscr();
    printf("Program to find a number out of an array\n"); 
    printf("Enter 25 No.s separated by space\n");
    for(i=0;i<25;i++)
        scanf("%d",&arr[i]);
    printf("Enter a No. : ");
    scanf("%d",&num);
    while(j<25)
    {
        if(arr[j]==num)
            count++;
        j++;
    }
    if(count==0)
        printf("Number %d is not in the list",num);
    else
        printf("Number %d appears %d times in the list",num,count);
}

OUTPUT
let us c chapter 8 array problem 1 output






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