C语言：月份缩写

题目描述

从一月份到十二月的英文全称依次是："January","February","March","April","May","June","July","August","September","October","November","December"

对应的缩写依次是："Jan.","Feb.","Mar.","Apr.","May.","Jun.","Jul.","Aug.","Sep.","Oct.","Nov.","Dec."。注意首字母大写，后面有个"."

现在用户来输入一个月份的英文，请程序输出对应的英文缩写，无论用户的单词是大写还是小写，均应给出正确的英文缩写。如果输入的英文单词错误，请输出"Error"

例如，用户输入"JULY"，程序应输出"Jul."

若用户输入的是"augest"，程序应输出"Error"
输入格式

一个英文单词，表示月份
输出格式

对应的月份缩写

分析

将字母全部转换为小写+字符串相等判断

字母全部转换为小写函数

void change(char s[10])
{
	int i;
	for(i=0;i<10;i++)
	{
		if(s[i]>='A' && s[i]<='Z')
		{
			s[i]+=32;
		}
	}
}

完整代码

#include <stdio.h>
#include <math.h>
#include <string.h>
void change(char s[10])
{
	int i;
	for(i=0;i<10;i++)
	{
		if(s[i]>='A' && s[i]<='Z')
		{
			s[i]+=32;
		}
	}
}

int main()
{
	char mon[12][10]={"january","february","march","april","may","june","july","august","september","october","november","december"};
	char suo[12][10]={"Jan.","Feb.","Mar.","Apr.","May,","Jun.","Jul.","Aug.","Sep.","Oct.","Nov.","Dec."};
	
	char s[10];
	gets(s);
	change(s);
	
	int i;
	int c=0;
	int flag=0;;
	for(i=0;i<12;i++)
	{
		c=strcmp(s,mon[i]); 
		if(c==0)
		{
			flag=1;
			printf("%s",suo[i]);
		}
	}
	
	if(flag==0)
	{
		printf("Error");
	}
	return 0;
}