Q:

C Program To Find Largest Number In An Array

belongs to collection: Array Programs in C

you have to make this program in the following way:

• C Program To Find Largest Number In An Array Using Recursion
• C Program To Find Largest Number In An Array Using Pointer
• C Program To Find the 2nd Largest Number In An Array

C Program To Find Largest Number In An Array Using Recursion

Program -:

``````//C Program To Find Largest Number In An Array Using Recursion

#include<stdio.h>
int Largest(int a[],int n);

void main()
{
int i,j,n,a[20];
printf("Enter a Number :");
scanf("%d",&n);
printf("Enter Values : ");

for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}

printf("\%d is Largest Number",Largest(a,n));
}
int Largest(int a[],int n)
{
int max;

if(n==1)
return a[0];

else {
max=Largest(a,n-1);

if(max>a[n-1])
return max;
else

return a[n-1];
}

}``````

Output -:

```Enter a Number : 5
Enter Values : 10
20
301
391
213
391 is Largest Number```

C Program To Find Largest Number In An Array Using Pointer

Program -:

``````//C Program To Find Largest Number In An Array Using Pointer

#include<stdio.h>
void  main()
{
int i,*ptr, n,a[100],larg;

printf("Enter How many number you want?:\n") ;
scanf("%d",&n) ;

printf("Enter %d numbers\n",n) ;
for(i=0;i<n;i++)
{
scanf("%d",&a[i]) ;
}
ptr = &a[0];
larg= *ptr;
for(i=0;i<n;i++,*ptr++)
{
if(*ptr>larg)
{
larg=*ptr;
}
}
printf("%d is Largest Number",larg);
}``````

Output -:

```Enter How Many Number You Want?
5
Enter 5 Numbers
10
3281
28321
33212
2434

33212 is Largest Number```

C Program To Find 2nd Largest Number In An Array

Program -:

``````//C Program To Find the 2nd Largest Number In An Array

#include<stdio.h>
void  main()
{
int i,n,array[100],Largest, secLargest;

printf("Enter How many number you want?:\n") ;
scanf("%d",&n) ;

printf("Enter %d Values \n",n) ;
for(i=0;i<n;i++)
{
scanf("%d",&array[i]) ;
}
if (array[0] > array[1]) {
Largest = array[0];
secLargest = array[1];
}
else {
Largest = array[1];
secLargest = array[0];
}
for (i = 2; i < n; i++) {
if (array[i] > Largest) {
secLargest = Largest;
Largest = array[i];
}
else if (array[i] > secLargest) {
secLargest = array[i];
}
}
printf(" \nSecond Largest Element is %d", secLargest);
}``````

Output -:

```Enter How Many Number You Want?
5
Enter 5 Numbers
10
321
2821
312
2434

Second Largest Element is 2434```