hojak99 의 블로그

package com.example.hojak.myapplication; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.LinearLayout; import android.widget.TextView; public class MainActivity extends AppCompatActivity{ @Override public void onCreate(Bundle savedInstanceState) { super.onCreat..

void func(int(*fp)(int, int));int sum(int a, int b);int mul(int a, int b);int max(int a, int b); int main(void){int sel;printf("1. 두 정수의 합 : \n");printf("2. 두 정수의 곱 : \n");printf("3. 두 정수 중에서 큰 값 계싼 : \n");scanf("%d", &sel); switch (sel){case 1: func(sum); break;case 2: func(mul); break;case 3: func(max); break;}return 0; } void func(int(*fp)(int, int)){int a, b;int res; printf("두 정수 값을 입력하세요.")..

void main(){int a = 10;double b = 3.5;void *vp;vp = &a;printf(" a : %d", *(int *)vp);vp = &b;printf(" b : %f", *(double *)vp);} void reserve(double *pa, int size); int main(void){double ary[] = { 1.5, 20.1, 16.4, 2.3, 3.5 };int i; reserve(ary, sizeof(ary) / sizeof(*ary));for (i = 0; i < 5; i++) {printf("%5.1lf", ary[i]);}printf("\n");return 0;} void reserve(double *pa, int size){ double tmp = 0;..

void input_ary(int *, int);void print_ary(int *, int); int main(){int ary[5] = { 10,20,30,40,50 }; int size = sizeof(ary) / sizeof(ary[0]);print_ary(ary, 5);input_ary(ary, size);print_ary(ary, 5);return 0;} void print_ary(int *ary, int a){for (int i = 0; i < a; i++) {printf("%d ", *(ary+i));}puts("");puts("");} void input_ary(int *ary, int size){int num;for (int i = 0; i < size; i++) {scanf("%d"..

#include double ary_avg(int *); int main(){int ary[5] = { 75,80,92,88,98 }; double res;res = ary_avg(ary);printf("배열의 평균은 : %2lf \n", res);return 0;} double ary_avg(int *ary){double total = 0; for (int a = 0; a < 5; a++) {total += *(ary + a);} total = total / 5.0;return total;} 출력결과 :배열의 평균은 : 86.600000

package kr.hs.dsm.appb.ch_6_6; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.RadioButton; import android.widget.Toast; import android.widget.ToggleButton; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentVie..

package kr.hs.dsm.appb.ch_6_5; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.RadioButton; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public ..

package kr.hs.dsm.appb.ch_6_5; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.RadioButton; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public ..

package kr.hs.dsm.appb.ch_6_4; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.text.Editable; import android.view.View; import android.widget.CheckBox; import android.widget.Toast; public class MainActivity extends AppCompatActivity { CheckBox check; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setCon..

package kr.hs.dsm.appb.ch_6_3; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.text.Editable; import android.view.KeyEvent; import android.view.View; import android.view.inputmethod.EditorInfo; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity { EditText editTe..