C/C++程序中的数组

data_tpye array_name[length];

float percentage[10]

percentage[5] = 45.3;

float percentage[] = {56.4 , 99.0, 12.20, 67.2}

float anam’spercentage = percentage[4];

#include <iostream>
using namespace std;
int main(){
   float percentage[] = {56.4 , 99.0, 12.20, 67.2};
   cout<<"printing all values of the array :\n";
   for(int i = 0; i<4 ; i++){
      cout<<"element "<<i+1<<" = "<<percentage[i]<<endl;
   }
   return 0;
}

printing all values of the array :
element 1 = 56.4
element 2 = 99
element 3 = 12.2
element 4 = 67.2

#include <iostream>
using namespace std;
int main(){
   float percentage[4];
   percentage[0] = 56.3;
   percentage[1] = 99.12;
   percentage[2] = 78.32;
   percentage[3] = 61.3;
   cout<<"3rd element is "<<percentage[2];
   return 0;
}

3rd element is 78.32

#include <iostream>
using namespace std;
int main(){
   float percentage[4];
   percentage[0] = 56.3;
   percentage[1] = 99.12;
   percentage[2] = 78.32;
   percentage[3] = 61.3;
   cout<<"3rd element is "<<percentage[2];
   percentage[2] = 12.22;
   cout<<"\nafter change :\n";
   cout<<"3rd element is "<<percentage[2];
   return 0;
}

3rd element is 78.32
after change :
3rd element is 12.22