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Link: http://codepad.org/pNXpAob2    [ raw code | output | fork ]

C++, pasted on Aug 6:
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char* argv[])
{
	int ketqua = 0,dapan=0,dongy=0, level=0,so0=0,so1=1,so2=2,so3=3,so4=4,so5=5,so6=6,so7=7,so8=8,so9=9 ;
	//Chúng ta yêu cầu người sử dụng nhập thông tin sau
	printf("Chao mung ban den voi thu thach Toan Hoc.\n");
	printf("Start!");
	scanf_s("%d", &dongy);
	printf("Vui long chon cap do (1; 2; 3)");
	scanf_s("%d", &level);
	if (level = 1)
	{
		printf("Cau hoi thu nhat\n");
		printf("1 + 1 = \n");
		ketqua = so1 + so1;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if(dapan != ketqua)
		{
			printf("false\n");
		}
		printf("Cau hoi thu 2:\n");
		printf("2 + 2 = \n");
		ketqua = so2 + so2;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if (dapan != ketqua)
		{
			printf("false\n");
		}
		printf("Cau hoi thu 3:\n");
		printf("4 + 4 = \n");
		ketqua = so4 + so4;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if (dapan != ketqua)
		{
			printf("false\n");
		}
		printf("Cau hoi thu 4:\n");
		printf("8 + 8 = \n");
		ketqua = so8 + so8;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if (dapan != ketqua)
		{
			printf("false\n");
		}
		printf("Cau hoi thu 5:\n");
		printf("16 + 16 = \n");
		ketqua = so8 * 2 + so8 * 2;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if (dapan != ketqua)
		{
			printf("false\n");
		}
		printf("Cau hoi thu 6:\n");
		printf("32 + 32 = \n");
		ketqua = so8*4 + so8*4;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if (dapan != ketqua)
		{
			printf("false\n");
		}
		printf("Cau hoi thu 7:\n");
		printf("64 + 64 = \n");
		ketqua = so8*8 + so8*8;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if (dapan != ketqua)
		{
			printf("false\n");
		}
		printf("Cau hoi thu 8:\n");
		printf("128 + 128 = \n");
		ketqua = so8*32;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if (dapan != ketqua)
		{
			printf("false\n");
		}
		printf("Cau hoi thu 9:\n");
		printf("256 + 256 = \n");
		ketqua = so8*64;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if (dapan != ketqua)
		{
			printf("false\n");
		}
		printf("Cau hoi thu 10:\n");
		printf("512 + 512 = \n");
		ketqua = so8*128;
		scanf_s("%d", &dapan);
		if (dapan == ketqua)
		{
			printf("Correct!\n");
		}
		if (dapan != ketqua)
		{
			printf("false\n");
		}
	}
	return 0;
}


Output:
1
2
3
In function 'int main(int, char**)':
Line 10: error: 'scanf_s' was not declared in this scope
compilation terminated due to -Wfatal-errors.


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