배열 연습

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main(void) {
  int number[10];
  srand(time(NULL));
  for (int i = 0; i < 10; i++)
    number[i] = rand() % 100;
  for (int i = 0; i < 10; i++)
    printf("number = %d\n", number[i]);
  return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define SIZE 25
int main(void) {

  srand(time(NULL));
  int score[SIZE];
  int total=0;
  int max=-999,min=999;
  float avg=0;
  for(int i=0;i<SIZE;i++)
    score[i]=rand()%100+1;
  for(int i=0; i<SIZE;i++){
    printf("%d\t",score[i]);
    if((i+1)%10==0) printf("\n");
  }
  for(int i=0;i<SIZE;i++){
    total+=score[i];
  }
  avg=(float)total/SIZE;
  for(int i=0;i<SIZE;i++){
    if(score[i]>max)
      max=score[i];  
    if(score[i]<min)
      min=score[i];
  }
  printf("\n");
  printf("총점: %d\n",total);
  printf("평균: %3.2f\n",avg);
  printf("최고점: %d\n",max);
  printf("최저점: %d\n",min);

  return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define SIZE 20
int main(void) {
 // 선택정렬
  srand(time(NULL));
  int score[SIZE];
  int temp=0;
  int most=0;
  for(int i=0;i<SIZE;i++)
    score[i]=rand()%100+1;
  for(int i=0; i<SIZE;i++){
    printf("%d\t",score[i]);
    if((i+1)%10==0) printf("\n");
  }
  // 내림차순
  for(int i=0; i <SIZE; i++){
    most=i;
    for(int j=i+1; j<SIZE;j++){
      if(score[most] < score[j])most = j;
    }
    temp= score[i];
    score[i]=score[most];
    score[most]=temp;
  }

  printf("\n\n");
  for(int i=0; i<SIZE;i++){
    printf("%d\t",score[i]);
    if((i+1)%10==0)printf("\n");
  }
  //오름차순
  for(int i=0; i <SIZE; i++){
    most=i;
    for(int j=i+1; j<SIZE;j++){
      if(score[most] > score[j])most = j;
    }
    temp= score[i];
    score[i]=score[most];
    score[most]=temp;
  }
  printf("\n\n");
  for(int i=0; i<SIZE;i++){
    printf("%d\t",score[i]);
    if((i+1)%10==0)printf("\n");
  }
  return 0;
}