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输出:_13_____________
3、//首尾交换数组内容
#include
using namespace std;
int main(){
int a[6] = {1,2,3,4,5,6};
int pi = 0;
int pj=5;
int t,i;
while (pi
using namespace std;
int main(){
int i,length1,length2;
string s1,s2;
s1 = "I have a dream.";
s2 = "I Have A Dream.";
length1 = s1.size();
length2 = s2.size();
for(i=0;i='a' && s1[i]<='z')
s1[i] -= 'a' - 'A';
for(i=0;i='a' && s2[i] <='z')
s2[i] -= 'a'-'A';
if(s1==s2)
2
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cout << "=" << endl;
else if(s1>s2)
cout<<">"<
using namespace std;
int main(){
int a,b,c;
a = 1;
b = 2;
c = 3;
if(a>b) {
if(a>c)
else
cout<
using namespace std;
struct point{
int x;
int y;
};
int main(){
struct EX {
int a;
int b;
point c;
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} e;
e.a = 1;
e.b = 2;
e.c.x = e.a+e.b;
e.c.y = e.a*e.b;
cout << e.c.x << ',' << e.c.y <
#include
using namespace std;
int main(){
string str;
int i;
int count;
count = 0;
getline(cin,str);
for(i=0;i='a' && str[i]<='z')
count++;
}
cout << "It has "<
using namespace std;
void fun(char *a,char *b){
a = b;
(*a)++;
}
int main(){
char c1,c2,*p1,*p2;
c1 = 'A';
c2 = 'a';
p1 = &c1;
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p2 = &c2;
fun(p1,p2);
cout << c1 <
using namespace std;
int main(){
int a,b,c,d,ans;
cin >> a>>b>>c;
d=a-b;
a = d+c;
ans = a*b;
cout<< "Ans= " <
using namespace std;
int fun(int n){
if (n==1)
return 1;
if (n==2)
return 2;
return fun(n-2)-fun(n-1);
}
int main(){
int n;
cin >> n;
cout << fun(n)<NOIP 公众号 50808786@qq.com
输出:-11________________
3、{注:考察对字符的操作,ord 和 chr 函数的理解}
#include
#include
using namespace std;
int main()
{
string st;
int i,len;
getline(cin,st);
len = st.size();
for(i=0;i='a' && st[i]<='z')
st[i] = st[i]-'a'+'A';
}
cout <
using namespace std;
const int SIZE = 100;
int main()
{
int p[SIZE];
int n,tot,i,cn;
tot = 0;
cin >> n;
for(i=1;i<=n;i++) p[i] = 1;
for(i=2;i<=n;i++){
if(p[i]==1)
tot++;
cn = i*2;
while(cn<=n){
p[cn] = 0;
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cn +=i;
}
}
cout<
using namespace std;
int main()
{
int a,b;
cin>>a>>b;
cout<
using namespace std;
int main()
{
int a,b,u,i,num;
cin>>a>>b>>u;
num = 0;
for(i=a;i<=b;i++)
if((i%u) ==0)
num++;
cout<NOIP 公众号 50808786@qq.com
3、{注:本题的实质是二分法查找指定数据}
#include
using namespace std;
int main()
{
const int SIZE=100;
int n,f,i,left,right,middle,a[SIZE];
cin>>n>>f;
for(i=1;i<=n;i++)
left = 1;
right =n;
do{
cin>>a[i];
middle = (left+right) /2;
if(f<=a[middle])
right = middle;
else
left = middle+1;
} while(left
using namespace std;
int main()
{
const int SIZE = 100;
int height[SIZE],num[SIZE], n,ans;
cin>>n;
for(int i=0;i>height[i];
num[i]=1;
for(int j=0;j=num[i]))
num[i] = num[j]+1;
}
8