THMMY.gr

#include <stdio.h>

int ar_tmim, i, n, j, sum=0;

struct student {
	char name[20];
	int aem;
	float point;
};

struct depart {
	int st_num, st_pro, st_no_pro;
};

struct student *p;

void main () {
	scanf("%d",&ar_tmim);
	
	struct depart tmimata[ar_tmim];

	for (i=0; i<ar_tmim; i++) {
		printf ("/nDose plithos foititon gia to %d tmima/n", i);
		scanf ("%d", &tmimata[i].st_num);

		siz=sizeof(20*sizeof(char)*sizeof(int)*sizeof(float);
		if ((p=malloc(siz))==NULL) exit(1);


		for (j=0; j<tmimata[i].st_num; j++) {
			tmimata[i].st_pro=0;
			tmimata[i].st_no_pro=0;

			printf ("/nDose onoma toy %d ou foititi/n", j);
			scanf ("%s", p->name);
			printf ("/nDose AEM toy %d ou foititi/n", j);
			scanf ("%d", p->aem);
			printf ("/nDose vathmo toy %d ou foititi/n", j);
			scanf ("%d", p->point);

			if (p->point >= 5) {
				tmimata[i].st_pro++;}
			else {
				tmimata[i].st_no_pro++;}
		}

		printf ("/nO arithmos ton foititon me provivasimo vathmo sto %d tmima einai %d eno me mi provivasimo einai %d/n", i, tmimata[i].st_pro, tmimata[i].st_no_pro);

		sum=sum+tmimata[i].st_pro;
	}

	printf ("/nOi provivasimoi foitites tis sxolis einai %d/n", sum);
}

#include <stdio.h>

int ar_tmim, i, n, j, sum=0;

#define ar_tmim 10
#include <stdio.h>

int  i, n, j, sum=0;

#include "stdio.h"
#include "stdlib.h"

struct student{
	char name[20];
	int aem;
	float point;
};

struct depart{
	int st_num,st_pro,st_no_pro;	
	student *s;							
};

void main()
{
	int n,siz,size;
	[s]void *p ,*rp;[/s] [b]struct depart *d;[/b]
      [b]  struct student *st;[/b]
	printf("Dwse arithmo tmimatwn: ");
	scanf("%d",&n);
	[s]siz=sizeof(n*(3*sizeof(int)+sizeof(long int))); //provlima!![/s] [b]siz=n*sizeof(struct depart);[/b]
	[s]if ((p=malloc(siz))==NULL) exit(1);[/s]	if ((d=(struct depart *)malloc(siz))==NULL) exit(1);
	[s]depart *d;[/s]
	[s]d=(depart *)p[/s]		
	int total=0;									
	for(int i=0;i<n;i++){
		d[i].st_no_pro = 0;						
		d[i].st_pro = 0;
		printf("\nDwse arithmo foititwn: ");
		scanf("%d",&d[i].st_num);
		[s]size=sizeof(d[i].st_num*(20*sizeof(char)+sizeof(int)+sizeof(float)));[/s]΄
               [b]size=d[i].st_num*(20*sizeof(char)+sizeof(int)+sizeof(float));[/b]
               [s]if ((rp=malloc(size))==NULL) exit(1);[/s] 
              [b] if ((st=(struct student *)malloc(size))==NULL) exit(1);[/b]
		[s]student *st;
		st=(student *)rp;[/s]
		d[i].s = st;								
		for(int j=0;j<d[i].st_num;j++){
			printf("\nDwse onoma foititi: ");
			scanf("%s",&d[i].s[j].name);
			printf("Dwse AEM: ");
			scanf("%d",&d[i].s[j].aem);
			printf("Dwse vathmo: ");
			scanf("%f",&d[i].s[j].point);				
		}
		for(j=0;j<d[i].st_num;j++){
			if	(d[i].s[j].point >=5){		
					printf("%s\n",d[i].s[j].name);
					printf("%d\n",d[i].s[j].aem);
					printf("%f\n",d[i].s[j].point);
					d[i].st_pro++;
			}
			else d[i].st_no_pro++;
		}
		printf("\nProvivasimoi: %d\n",d[i].st_pro);
		printf("Mi provivasimoi: %d\n",d[i].st_no_pro);
		total+=d[i].st_pro;
		[s]free (rp);	[/s]		[b]free (st);	[/b]			
	}
	
	printf("\n\nSynolika provivasimoi: %d\n\n",total);
	[s]free (p);[/s]		[b]free (d);[/b]					
}

if (  (tmima=(struct depart*)malloc(siz))==NULL  )

...

free((void*)tmima);

int n;
n=sizeof(p)

class A{
     int n, s;
     int *a;
public:
     friend int sum(A);
     friend int main();
     void get_data();
};

void A::get_data()
{
     int *a, i;
     cout << "Diastasi monodiastatou pinaka___ ";
     cout << "n=> ";     cin  >> n;
     a=(int *)malloc( n*sizeof(int) );
     if (a==NULL){
          cout << "\n\n\nNo memory\n\nPress any key to end this program\n\n";
          getch();
          exit(12345);
     }
     cout << "\n\nAA.a=> " << a << "\n\n";          //-------> TEST
     cout << "\n\n";
     for (i=0 ; i<n ; i++){
         cout << "a[" << i+1 << "] => ";
         cin  >> a[i];
     }
}

int sum(A AA)
{
     int i, sum=0;
     cout << "\n\nAA.a=> " << AA.a << "\n\n";          //-------> TEST
     for (i=0 ; i<AA.n ; i++){
          if (AA.a[i]>0){
               sum+=AA.a[i];
          }
     }
     cout << "\n\nsum(A AA)___sum=> " << sum << "\n\n";
     return sum;
}

main()
{    int i, j;
     A AA;
     B BB;
     AA.get_data();
     BB.get_data();
     AA.s=sum(AA);
     BB.s=sum(BB);
...
     cout << "\n\nA__s=> " << AA.s;
...