C Program to find two largest elements in a one dimensional array.
#include<stdio.h>
#include<stdlib.h>
#include<limits.h>
void findTwoMax(int* a,int n)
{
int max=a[0]; //initialize max to first array element
int sec_max=INT_MIN,temp=0; //initialize max to first array element
for(int i=0;i<n;i++){ //scan the entire array
//if a[i]> max then update max to array value &
//second max to previous max value
if(a[i]>max){
sec_max=max;
max=a[i];
}
//else if a[i] is greater than second max but less
//than max then update second max to array value
else if (a[i] > sec_max && a[i] < max)
sec_max=a[i];
//do nothing to max
}
//if second max is still at its initialized value
//then no second maximum exists at all
if(sec_max==INT_MIN)
printf("only one large element: %d ",max);
else
printf("First largest element: %d & second largest element : %d",max,sec_max);
}
int main(){
int n;
printf("enter no of elements\n");
scanf("%d",&n);
//dynamic array created
int *a=malloc(sizeof(int)*n);
printf("enter the elements........\n");
//taking input
for(int i=0;i<n;i++)
scanf("%d",&a[i]);
//find two largest no
findTwoMax(a,n);
return 0;
}
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| To find Largest element |