标签：des style blog http color java os io
Description
The classic programming language of Bitland is Bit++. This language is so peculiar and complicated.
The language is that peculiar as it has exactly one variable, called x. Also, there are two operations:
A statement in language Bit++ is a sequence, consisting of exactly one operation and one variable x. The statement is written without spaces, that is, it can only contain characters "+", "-", "X". Executing a statement means applying the operation it contains.
A programme in Bit++ is a sequence of statements, each of them needs to be executed. Executing a programme means executing all the statements it contains.
You‘re given a programme in language Bit++. The initial value of x is 0. Execute the programme and find its final value (the value of the variable when this programme is executed).
Input
The first line contains a single integer n(1 ≤ n ≤ 150) — the number of statements in the programme.
Next n lines contain a statement each. Each statement contains exactly one operation (++ or --) and exactly one variable x (denoted as letter «X»). Thus, there are no empty statements. The operation and the variable can be written in any order.
Output
Print a single integer — the final value of x.
Sample Input
水题，注意++和--怎么比较表示
代码：
#include<stdio.h> #include<string.h> #include<stdlib.h> int main() { char s[5]; int x,n; while(~scanf("%d",&n)) { x=0; while(n--) { scanf("%s",s); if(s[0]==‘+‘||s[1]==‘+‘) x++; else if(s[0]==‘-‘||s[1]==‘-‘) x--; } printf("%d\n",x); } return 0; }
标签：des style blog http color java os io
原文地址：http://www.cnblogs.com/lipching/p/3904000.html
