bai tap C++

#include<stdio.h>
#include<conio.h>
main(){
	int i,j,n,m;
	float max;
	printf("Objective: Cho ma tran n*m, xoa hang dau tien chua GTLN, hien thi ra man hinh\n");
	printf("Nhap so hang: ");
	scanf("%d",&n);
	printf("Nhap so cot: ");
	scanf("%d",&m);
	float a[n][m];
	for (i=0;i<n;i++) //bat dau nhap ma tran
		for (j=0;j<m;j++){
			printf("Nhap phan tu hang %d cot %d: ",i+1,j+1);
			scanf("%f",&a[i][j]);}
	max=a[0][0]; //dat max = phan tu dau tien cua ma tran
	printf("Kiem tra ma tran:\n"); // kiem tra ma tran
		for (i=0;i<n;i++){
		for (j=0;j<m;j++)
			printf("%5.2f",a[i][j]);
		printf("\n");
		}

	for (i=0;i<n;i++)
		for (j=0;j<m;j++)
			if (max<a[i][j]) max=a[i][j];
	printf("Phan tu lon nhat la: %.2f.\n",max);
	int ii;
	for (i=0;i<n;i++) // tim hang chua phan tu lon nhat
		{for (j=0;j<m;j++)
			{if (a[i][j]==max) ii=i;
			if (a[i][j]==max) break;}
		if (a[i][j]==max) break;}
		printf("Hang dau tien co phan tu lon nhat la hang thu %d.\n",ii+1);
	printf("Ma tran moi la:\n");
	for (i=0;i<n;i++){
		if (i==ii)continue;
		printf("\n");
		for (j=0;j<m;j++)
			printf("%5.2f",a[i][j]);}
	getch();}