C Program to Implement Stack Operations Using Array

#include<stdio.h>
#define M 50
struct state
{
    char name[50];
    long int population;
    float literacyRate;
    float income;
}st[M];     /* array of structure */
int main()
{
int i,n,ml,mi,maximumLiteracyRate, maximumIncome;
float rate;
ml = mi =-1;
maximumLiteracyRate = maximumIncome = 0;

printf("Enter how many states:");
scanf("%d",&n);
for(i=0;i<n;i++)
  {
    printf("\nEnter state %d details :",i);
    printf("\n\nEnter state name : ");
    scanf("%s",&st[i].name);
    printf("\nEnter total population : ");
    scanf("%ld",&st[i].population);
    printf("\nEnter total literary rate : ");
    scanf("%f",&rate);
    st[i].literacyRate = rate;
    printf("\nEnter total income : ");
    scanf("%f",&st[i].income);
  }
for(i=0;i<n;i++)
{
    if(st[i].literacyRate >= maximumLiteracyRate)
        {
        maximumLiteracyRate = st[i].literacyRate;
        ml++;
        }
    if(st[i].income > maximumIncome)
        {
        maximumIncome = st[i].income;
        mi++;
        }
}
printf("\nState with highest literary rate :%s",st[ml].name);
printf("\nState with highest income :%s",st[mi].name);
return(0);
}
Output :
Enter how many states:3

Enter state 0 details :

Enter state name : Maharashtra

Enter total population : 1000

Enter total literary rate : 90

Enter total income : 10000

Enter state 1 details :

Enter state name : Goa

Enter total population : 300

Enter total literary rate : 94

Enter total income : 5000

Enter state 2 details :

Enter state name : Gujrat

Enter total population : 900

Enter total literary rate : 78

Enter total income : 7000

The state whose literary rate is the highest : Goa
The state whose income is the highest : Maharashtra