import <Foundation/Foundation.h>
int main(int argc, const char * argv[]) {
//1 隨機(jī)產(chǎn)生20個(gè)10~50的正整數(shù)存放到數(shù)組中，并求數(shù)組中的元素最大值康愤、最小值、平均值及各元素之和竟终。
int array[20] = {0};
int max = 0;
int min = 51;
int sum = 0;
for (int i = 0; i < 20; i++) {
array[i]=arc4random()%(50-10+1)+10;
sum += array[i];
if (array[i]>10) {
max = max > array[i]?max:array[i];
}
min = min < array[i]? min : array[i];
printf("數(shù)組的數(shù)%d\n",array[i]);
}
printf("最大值為：%d,最小值為:%d",max,min);
printf("數(shù)組的和為：%d,平均值為：%2f\n",sum,sum/20.0);
//2編寫整型值數(shù)組排序程序(冒泡排序—升序)
int a[] = {3,-9,32,77,63,-24,14,0,21,45};
for (int i = 0; i < 10 - 1; i++) {
for (int j = 0; j < 10 - 1 - i; j++) {
if (a[j]>a[j+1]) {
int temp = a[j];
a[j] = a[j+1];
a[j+1] = temp;
}
}
}
for (int j = 0; j < 10; j++) {
printf("%d\n",a[j]);
}
//3找出下列整型數(shù)組中最大和最小值及其所在位置i。
int a[] = {3,-9,32,77,63,-24,14,0,21,45};
int max=-25;
int min=78;
int j=0,k=0;
for (int i = 0; i < 10; i++) {
//max = max > a[i] ? max : a[i];
if (max < a[i]) {
max = a[i];
j = i;
}
if (min>a[i]) {
min = a[i];
k = i;
}
}
printf("最大值為：%d,最小值為:%d,最大值位置：%d,最小值位置為:%d",max,min,j,k);
//4給定某年某月某日,輸出其為這一年的第幾天
int year = 0;
int month = 0;
int day = 0;
int sumday = 0;
printf("請(qǐng)輸入一個(gè)日期：(xxxx xx xx)");
scanf("%d %d %d",&year,&month,&day);
int monthes[ ] = { 31,28, 31,30,31,30,31,31,30,31,30,31 };
for (int i = 0 ; i < month - 1; i++) {
sumday += monthes[i];
}
sumday += day;
//閏年
if ((year % 4 == 0 && year % 100 != 0 )|| (year % 400 == 0)) {
if (month > 2 ) {
sumday ++;
}
}
printf("這是第%d天",sumday);
//5把str1, str2, str3合并到result數(shù)組中海铆。
// char result[50] = {0};
// char str1[] = "Lanou ";
// char str2[] = "BJS170702_class ";
// char str3[] = " is niu best!";
// 結(jié)果：“Lanou BJS170702_class is niu best!”
char result[50] = {0};
char str1[] = "Lanou ";
char str2[] = "BJS170702_class ";
char str3[] = " is niu best!";
char str4[50] = "";
strcat(str4, str1);
strcat(str4, str2);
strcat(str4, str3);
//printf("%s\n",str4);
for (int i = 0 ; i < sizeof(str4) - 1 ;i++ )//-0====\0
{
result[i] = str4[i];
}
for (int i = 0 ; i < sizeof(str4) ; i++) {
printf("%c",result[i]);
}
return 0;
}
