ex20250331 - rlawjdaks/ex20250310_first GitHub Wiki

#include <stdio.h>
void SumInteger(int num)
{
	int sum = 0;
	for (int i = 1; i <= num; ++i)
		sum = sum + i;
	printf("sum = %d\n", sum);
}

int main()
{
	SumInteger(3);
	SumInteger(10);
	SumInteger(100);
}

#include <stdio.h>
void SumInteger()
{
	int sum = 0;
	for (int i = 1; i <= 3; ++i)
		sum = sum + i;
	printf("sum = %d\n", sum);
}

int main()
{
	SumInteger();
	SumInteger();
	SumInteger();
}

#include <stdio.h>
int main()
{
	int sum = 0;
	for (int i = 1; i <= 3; ++i)
		sum = sum + i;
	printf("sum = %d\n", sum);
}

#include <stdio.h>
int main()
{
	int sum = 0;
	for (int i = 1; i <= 3; ++i)
	{
		sum = sum + i;
	}
	printf("sum = %d\n", sum);
}

#include <stdio.h>
int main()
{
	int sum = 0;
	for (int i = 1; i <= 3; ++i)
        {
		printf("%d\n", sum);
		sum = sum + i;
	}
}

#include <stdio.h>
int main()
{
	for (int i = 1; i <= 10; ++i)
			printf("%d\n", i);

	int sum = 0;
	printf("sum = %d\n", sum);
	sum = sum + 1;
	printf("sum = %d\n", sum);
	sum = sum + 2;
	printf("sum = %d\n", sum);
	sum = sum + 3;
	printf("sum = %d\n", sum);
}

#include <stdio.h>
int main()
{
	int n = 100;
	for (int i = 0; i < n; ++i)
	{
		if( i%2 == 0) //if( i => 짝수)
		printf("[%d] : %d\n", i, i + 1);
	}
}

#include <stdio.h>
int main()
{
	int n = 100;
	for (int i = 0; i < n; i = i+2)
	{
		printf("[%d] : %d\n", i, i + 1);
	}
}

#include <stdio.h>
int main()
{
	int n = 10;
	for (int i = 0; i < n; ++i)
		printf("[%d] : %d\n", i, i + 1);
}

#include <stdio.h>
#include <conio.h>
int main()
{
	int run = 1;
	while (run)
	{
		printf("문자를 입력해(종료:q) : ");
		char c = _getch();
		if (c == 'q')
			break;
		printf("Hello! : %c\n", c);
	}
}

#include <stdio.h>
#include <conio.h>
int main()
{ 
	while (1)
	{
		printf("문자를 입력해(종료:q) : ");
		char c = _getch();
		if (c == 'q')
			break;
		printf("Hello! : %c\n", c);
	}
}

#include <stdio.h>
int main()
{
	int i = 0;
	while (i < 5)
	{
		printf("int : %d\n", i);
		++i;
	}
}

#include <stdio.h>
int main()
{
	for (int i = 0; i < 5; ++i)
	{
		printf("int : %d\n", i+1);
	}
}