HDU 1000
Problem Description Calculate A + B.
Input Each line will contain two integers A and B. Process to end of file.
Output For each case, output A + B in one line.
Sample Input 1 1
Sample Output 2 |
正确↘
# include <stdio.h>
int main ()
{
int a,b;
while(scanf("%d%d",&a,&b)!=EOF)
printf("%d\n",a+b);
return 0;
}
HDU 1001
Problem Description Hey, welcome to HDOJ(Hangzhou Dianzi University Online Judge). Input The input will consist of a series of integers n, one integer per line.
Output For each case, output SUM(n) in one line, followed by a blank line. You may assume the result will be in the range of 32-bit signed integer.
Sample Input 1 100
Sample Output 1 5050 |
AC：
#include<stdio.h>
int main()
{
int n,sum;
while(scanf("%d",&n)!=EOF)
{
sum=n/2.0*(n+1);
printf("%d\n\n",sum);
}
return 0;
}
AC↘分析：不能在第四行给sum赋初值，不然每次运算后sum的值不为0
#include<stdio.h>
int main()
{
int i,n,sum;
while(scanf("%d",&n)!=EOF)
{
sum=0;
for(i=1;i<=n;i++)
sum=sum+i;
printf("%d\n\n",sum);
}
return 0;
}
1089
Problem Description Your task is to Calculate a + b.
Input The input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.
Output For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.
Sample Input 1 5 10 20
Sample Output 6 30 |
# include <stdio.h>
int main ()
{
int a,b;
while(scanf("%d%d",&a,&b)!=EOF)
printf("%d\n",a+b);
return 0;
}
1090
Problem Description Your task is to Calculate a + b.
Input Input contains an integer N in the first line, and then N lines follow. Each line consists of a pair of integers a and b, separated by a space, one pair of integers per line.
Output For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.
Sample Input 2 1 5 10 20
Sample Output 6 30 |
#include<stdio.h>
int main()
{
int n,a,b;
scanf("%d",&n);
while(n--)
{
scanf("%d%d",&a,&b);
printf("%d\n",a+b);
}
return 0;
}
1091
Problem Description Your task is to Calculate a + b.
Input Input contains multiple test cases. Each test case contains a pair of integers a and b, one pair of integers per line. A test case containing 0 0 terminates the input and this test case is not to be processed.
Output For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.
Sample Input 1 5 10 20 0 0
Sample Output 6 30 |
#include<iostream>
using namespace std;
int main()
{
int a,b;
while(cin>>a>>b&&(a||b))
cout<<a+b<<endl;
return 0;
}
1092
Problem Description Your task is to Calculate the sum of some integers.
Input Input contains multiple test cases. Each test case contains a integer N, and then N integers follow in the same line. A test case starting with 0 terminates the input and this test case is not to be processed.
Output For each group of input integers you should output their sum in one line, and with one line of output for each line in input.
Sample Input 4 1 2 3 4 5 1 2 3 4 5 0
Sample Output 10 15 |
#include<stdio.h>
int main()
{
int n,i,a,sum;
while(scanf("%d",&n)!=EOF)
{ if(n)
{
sum=0;
for(i=1;i<=n;i++)
{
scanf("%d",&a);
sum+=a;
}
printf("%d\n",sum);
}
}
return 0;
}
1093
Problem Description Your task is to calculate the sum of some integers.
Input Input contains an integer N in the first line, and then N lines follow. Each line starts with a integer M, and then M integers follow in the same line.
Output For each group of input integers you should output their sum in one line, and with one line of output for each line in input.
Sample Input 2 4 1 2 3 4 5 1 2 3 4 5
Sample Output 10 15 |
正确↘
#include<stdio.h>
int main()
{
int i,m,n,a,sum;
scanf("%d",&m);
while(m--)
{
scanf("%d",&n);
sum=0;
for(i=1;i<=n;i++)
{
scanf("%d",&a);
sum+=a;
}
printf("%d\n",sum);
}
return 0;
}
1094
Problem Description Your task is to calculate the sum of some integers.
Input Input contains multiple test cases, and one case one line. Each case starts with an integer N, and then N integers follow in the same line.
Output For each test case you should output the sum of N integers in one line, and with one line of output for each line in input.
Sample Input 4 1 2 3 4 5 1 2 3 4 5
Sample Output 10 15 |
正确
#include<stdio.h>
int main()
{
int n,i,a,sum;
while(scanf("%d",&n)!=EOF)
{
sum=0;
for(i=1;i<=n;i++)
{
scanf("%d",&a);
sum+=a;
}
printf("%d\n",sum);
}
return 0;
}
1095
Problem Description Your task is to Calculate a + b.
Input The input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.
Output For each pair of input integers a and b you should output the sum of a and b, and followed by a blank line.
Sample Input 1 5 10 20
Sample Output 6 30 |
#include<stdio.h>
int main()
{
int a,b;
while(scanf("%d%d",&a,&b)!=EOF)
{
printf("%d\n\n",a+b);
}
return 0;
}
1096
Problem Description Your task is to calculate the sum of some integers.
Input Input contains an integer N in the first line, and then N lines follow. Each line starts with a integer M, and then M integers follow in the same line.
Output For each group of input integers you should output their sum in one line, and you must note that there is a blank line between outputs.
Sample Input 3 4 1 2 3 4 5 1 2 3 4 5 3 1 2 3
Sample Output 10 15 6 |
#include<stdio.h>
int main()
{
int l;
scanf("%d",&l);
while(l--)
{
int m,k,sum=0;
scanf("%d",&m);
for(int i=0;i<m;i++)
{
scanf("%d",&k);
sum+=k;
}
printf("%d\n",sum);
if(l!=0) printf("\n");
}
return 0;
}