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#include <stdio.h>
#include <math.h>
#include <stdlib.h>
void nhapmang(int a[], int &n){
	printf("nhap vao so luong phan tu: ");
	scanf("%d", &n);
	for(int i=0; i<n;i++){
		printf("A[%d]= ",i);
		scanf("%d", &a[i]);
	}
}
 
void xuatmang(int a[], int n){
 
	printf("cac phan tu trong mang la : ");
	for(int i=0;i<n;i++){
		printf("\nA[%d]= %d", i,a[i]);
	}
}
 
int sochinhphuong(int x)
{
	int i,n;
	for( i=0; i<n;i++)
	{
		if(sqrt(x)*sqrt(x)==x)
			return 1;
				return 0;
	}
 
}
 
void inrasochinhpguong(int a[], int n){
	for(int i=0;i<n;i++){
		if(sochinhphuong(a[i])){
			printf("\nSCP= %d\n\t\t", a[i]);
		}
		if(sochinhphuong(a[i])==0)
		printf("khong co SCP");
 
	}
}
 
main()
{
	int n, a[100];
	nhapmang(a,n);
	xuatmang(a,n);
	inrasochinhpguong(a,n);
 
}

prog.c:4:28: error: expected ';', ',' or ')' before '&' token
 void nhapmang(int a[], int &n){
                            ^
prog.c:44:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^
prog.c: In function 'main':
prog.c:47:2: warning: implicit declaration of function 'nhapmang' [-Wimplicit-function-declaration]
  nhapmang(a,n);
  ^
prog.c: In function 'sochinhphuong':
prog.c:31:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Standard output is empty