Penghitung IPK

#include<iostream.h>
#include<conio.h>
#include<ctype.h>
#include<stdlib.h>
int main(){
	int jmk, i, z;
	char *npm, sem;
	int bsks[170], bnilai[170], total[170], mutu[170];
	char matkul[170], *cbsks[170];
	clrscr();
	cout<<"=== Hitung IPK Sistem Informasi ===\n\n";
	cout<<"Masukkan NPM: "; cin>>npm;
	cout<<"Anda Sekarang Semester: "; cin>>sem;
	cout<<"Masukkan Jumlah Mata Kuliah: "; cin>>jmk;
	cout<<"===================================\n\n";
	cout<<"Masukkan Nilai Anda [A..E]\n";
	for(i=1; i<=jmk; i++){
		kondisi:
		cout<<"Mata kuliah ke "<<i<<" : "; cin>>matkul[i];
		if(matkul[i]=='a' || matkul[i]=='A'){
			bnilai[i]=4;
			}
		else if(matkul[i]=='b' || matkul[i]=='B'){
			bnilai[i]=3;
			}
		else if(matkul[i]=='c' || matkul[i]=='C'){
			bnilai[i]=2;
			}
		else if(matkul[i]=='d' || matkul[i]=='D'){
			bnilai[i]=1;
			}
		else if(matkul[i]=='e' || matkul[i]=='E'){
			bnilai[i]=0;
			}
		else{
			cout<<"Masukkan HANYA A,B,C,D,E!!\n";
			goto kondisi;
			}
		kond:
		cout<<"Bobot SKS [1..8]: "; cin>>bsks[i];
		if(bsks[i]>=1 && bsks[i]<=8){
			bsks[i]=bsks[i];
			}
		else{
			cout<<"Masukkan HANYA Angka 1-8!!\n";
			goto kond;
			}
		/*if(isdigit(cbsks[i])){
			bsks[i]=atoi(cbsks[i]);
			if(bsks[i]>=1 && bsks[i]<=8){
				bsks[i]=bsks[i];
				}
			else{
				cout<<"Masukkan 1-8!!\n";
				goto kond;
				}
			}
		else{
			cout<<"Masukkan HANYA Angka!!\n";
			goto kond;
			}*/
		mutu[i]=bnilai[i]*bsks[i];
		}
	cout<<"\n\nHASIL\n";
	float tmutu=0, tbobot=0;
	for(z=1; z<=jmk; z++){
		tmutu+=mutu[z];
		tbobot+=bsks[z];
		}
	float ipk;
	ipk=tmutu/tbobot;
	cout<<"========================\n";
	cout<<"\nNPM: "<<npm;
	cout<<"\nSemester: "<<sem;
	cout<<"\nJumlah Mata Kuliah: "<<jmk;
	cout<<"\nTotal Mutu: "<<tmutu;
	cout<<"\nTotal SKS: "<<tbobot;
	cout<<"\nTotal IPK: "<<ipk;
	cout<<"\n\n========================";
	getch();
	return 0;
	}