Loopy problem

 #include < iostream.h>
 #include < fstream.h>
 #include < time.h>
 
 char cube[100][100][100];
 
 int ABCDcheck(int x, int y, int z){
 int pp=0, ax, ay, az;
 //variacije stringov
 for(az=-1;az< 2;az++){
 for(ay=-1;ay< 2;ay++){
 for(ax=-1;ax< 2;ax++){
 //pogleda če sploh obstaja string v tisto smer
 if ((3*ax+x> =0) && (3*ay+y> =0) && (3*az+z> =0)){
 if ((cube[1*ax+x][1*ay+y][1*az+z]=='B') && (cube[2*ax+x][2*ay+y][2*az+z]=='C') && (cube[3*ax+x][3*ay+y][3*az+z]=='D')){
 pp++;
 }
 }
 } 
 } 
 } 
 
 return pp;
 }
 
 int main(){
 //load the file
 int i,x,y,z,a=0,b=0,c=0,d=0,found=0,test=0;
 char string[100];
 ifstream reader;
 reader.open("cube.txt", ios::in);
 for(z=0;z< 100;z++){
 for(y=0;y< 100;y++){
 reader> > string; 
 for(x=0;x< 100;x++){
 cube[x][y][z]=string[x];
 switch(string[x]){
 case 'A':
 a++;
 break;
 case 'B':
 b++;
 break;
 case 'C':
 c++;
 break;
 case 'D':
 d++;
 break;
 }
 
 } 
 }
 reader> > string;
 } 
 reader.close();
 cout< < "Load file time: "< < clock()/CLOCKS_PER_SEC< < ","< < clock()%CLOCKS_PER_SEC< < "s"< < endl;
 
 
 
 //check for 'ABCD'
 
 for(z=0;z< 100;z++){
 for(y=0;y< 100;y++){
 for(x=0;x< 100;x++){
 if(cube[x][y][z]=='A'){
 found+=ABCDcheck(x,y,z);
 }
 }
 }
 }
 cout< < "A:"< < a< < " B:"< < b< < " C:"< < c< < " D:"< < d< < " SUMA:"< < a+b+c+d< < endl;
 cout< < "ABCD stringov: "< < found< < endl;
 cout< < "Total time: "< < clock()/CLOCKS_PER_SEC< < ","< < clock()%CLOCKS_PER_SEC< < "s"< < endl;
 
 return 0;
 }