小测验-数组应用

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#include<iostream>
using namespace std;

int main(){
	int i, p[5], a, b, c, x, y = 20;
	for ( i = 0; i <= 4; i++ )cin>>p[i];

	a = (p[0] + p[1]) + (p[2] + p[3] + p[4]) / 7;
	b = p[0] + p[1] / ( (p[2] + p[3]) / p[4]);
	c = p[0] * p[1] / p[2];
	x = a + b - p[(p[3] + 3) % 4];
	if ( x > 10 )
		y += (b * 100 - a) / (p[p[4] % 3] * 5);
	else
		y += 20 + (b * 100 - c) / (p[p[4] % 3] * 5);
	cout<<x<<','<<y;
	return(0);
}

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#include<iostream>
using namespace std;
int main(){
	int i, a, b, c, d, f[4];
	for(i = 0; i < 4; i++) cin >> f[i];
	a = f[0] + f[1] + f[2] + f[3];
	a = a / f[0];
	b = f[0] + f[2] + f[3];
	b = b / a;
	c = (b * f[1] + a) / f[2];
	d = f[(b / c ) % 4];
	if(f[(a + b + c + d) % 4] > f[2])
		cout << a + b<< endl;
	else 
		cout << c + d << endl;
	return 0;
}

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#include <iostream> 
using namespace std;
const int SIZE = 100; 
int main() { 
    int n, i, isPlalindrome; 
    char str[SIZE]; 
    cin>>str; 
    n = strlen(str); 
    isPlalindrome = 1; 
    for (i = 0; i < n/2; i++) { 
        if (str[i] != str[n-i-1]) isPlalindrome = 0; 
    } 
    if (isPlalindrome) 
        cout<<"Yes"<<endl;
    else 
        cout<<"No"<<endl; 
    return 0; 
}