Operasi matriks dengan C

Matriks.c

#include<stdio.h>
#include<string.h>

int determinan(int kolom, int matriks1[][kolom]); // Inisialisasi fungsi
int main(void){

//Matriks	
		int hasil[10][10],det;
		int i , j , k , m , n , p , q , jumlah = 0,ordo;
		int CA00,CA01,CA02,CA03;
		int z;
		char y ,lanjut;
		printf("======================================== Matriks ========================================\n");
		printf("ukuran baris matriks 1 :");
		scanf("%d", &m);
		printf("ukuran kolom matriks 1 :");
		scanf("%d", &n);
		printf("ukuran baris matriks 2 :");
		scanf("%d", &p);
		printf("ukuran kolom matriks 2 :");
		scanf("%d", &q);
		ordo =n*m;
    int matriks1[m][n];
    int matriks2[p][q];
		
printf("\n");do{
		printf("masukan angka matriks 1\n");
			for(i=0;i<m;i++){
			for(j=0;j<n;j++){
			scanf("%d", &matriks1[i][j]);
	}
	}	
printf("\n");
		printf("masukan angka matriks 2\n");
			for(i=0;i<p;i++){
			for(j=0;j<q;j++){
			scanf("%d", &matriks2[i][j]);
	}
	}
printf("Matriks 1\n");
			for (i = 0; i < m; i++){
    		for (j = 0; j < n; j++){
      		printf("%d\t", matriks1[i][j]);
      		if(j == n-1){printf("\n");}}}
printf("Matriks 2\n");
			for (i = 0; i < p; i++){
    		for (j = 0; j < q; j++){
      		printf("%d\t", matriks2[i][j]);
      		if(j == q-1){printf("\n");}}}
printf("-------------------------------------------- Pengoperasian --------------------------------------------\n");
//pengoperasian

	scanf("%c",&z);
	printf("pilih Pengoperasian matrik\n");
	printf("1. penjumlahan matriks\n");
	printf("2. pengurangan matriks\n");
	printf("3. perkalian matriks\n");
	printf("4. determinan matriks\n");
	scanf("%i",&z);
	
//penjumlahan matriks	
	if (z==1){
		printf("hasil penjumlahan matriks :\n");
			for (i = 0; i < m; i++){
    		for (j = 0; j < n; j++){
      		hasil[i][j] = matriks1[i][j] + matriks2[i][j];
      		printf("%d\t", hasil[i][j]);
      		if(j == n-1){printf("\n");}
    }
  	}	
	}
//pengurangan matriks	
	else if (z==2){
			printf("hasil pengurangan matriks :\n");
			for (i = 0; i < m; i++){
    		for (j = 0; j < n; j++){
      		hasil[i][j] = matriks1[i][j] - matriks2[i][j];
      		printf("%d\t", hasil[i][j]);
			if(j == n-1){printf("\n");}
    	}	
  		}
	}
//perkalian matriks	
	else if (z==3){
				for(i = 0; i < m; i++){
      			for(j = 0; j < q; j++){
        		for(k = 0; k < p; k++){
          		jumlah = jumlah + matriks1[i][k] * matriks2[k][j];
        }
       		hasil[i][j] = jumlah;
        	jumlah = 0;
      	}
    	}
    		printf("Hasil perkalian matriks: \n");
    		for(i = 0; i < m; i++){
      		for(j = 0; j < n; j++){
        	printf("%d\t", hasil[i][j]);
			if(j == n-1){printf("\n");}
      	}
    	}
	}
//determinan matriks	
	else if (z==4){
    int a=sizeof(matriks1[0]);
    int kolom=a/4;
    printf("\nDeterminan akan diambil dari matriks1\n");
    printf("Determinan = %d", determinan(kolom, matriks1));
	
	}
	else if (z>4){
		printf("maaf tidak ada dipilihan");
	}
	printf("\nMau coba lagi(Y/N)? "); scanf("%s", &lanjut);

    }while((lanjut=='y')||(lanjut=='Y'));
}

// Fungsi Determinan
int determinan(int kolom, int matriks1[][kolom]){
int jumlah =0;
int a=sizeof(matriks1[0]);
int size=a/4;
int minor[size],l;
if (size==2){
	for (int i=0;i<size;i++){
	minor[i]=matriks1[1][1-i];	
		}	
	}

else if (size>2){
	int temp_minor[size-1][size-1];
	for (int i=0;i<size;i++){
		for (int k=0;k<size-1;k++){
			int o = 0;
			for (int l=0;l<size-1;l++){
				if (l==i){o= o+1;}
				temp_minor[k][l]= matriks1[k+1][o];
				o=o+1;
			}
		}
		minor[i] = determinan(sizeof(temp_minor[0])/4, temp_minor);
	}
}
for (int i=0;i<size;i++){
	int cofactor[size];
	if (i%2==0){
		cofactor[i]=matriks1[0][i]*minor[i]*1;
	}
	else {
		cofactor[i]=matriks1[0][i]*minor[i]*-1;
	}
	jumlah = jumlah + cofactor[i];
}		
  return jumlah;
}