teststring.c

本文件是帮同事做的一个小程序,要求是输入一行字符,如果是字符串,那么把第一个字母变成大写,如果字符串之间有多个空格,那么就只是保留一个,输出既可,

#include "stdio.h"
#include "string.h"
#include "ctype.h"

#define	truth 1
#define fault 0

#define MAX_CHAR   100

int main(void)
{
	int  bFirst = truth;
	int  bBlank = fault;
	char * input= "    ----Zeng Guang made this functiong           2006-5-4      ---- !" ;
	char output[MAX_CHAR];
	char temp;
	int	 i=0;// input count
	int  y=0;  //output count
		
	printf("The input is: \n %s",input);

	while(input[i] == ' ')   //去除开始的空格
		i++;

	for(;i<=strlen(input); i++)
	{    
		if((isalpha(input[i]))	)
		{	
			if((bFirst == truth)) 
			{
				if(islower(input[i]))
				{
					temp = toupper(input[i]);	
				}
				else
				{
					temp = input[i];	
				}
				bFirst = fault;
			}
			else
			{
				temp = input[i];
			}	
			
			output[y] = temp;
			y++;
			bBlank = fault;
			continue;
		}

		if((input[i]==' '))
		{
			if(bBlank == fault)
			{
				output[y] = ' ';
				y++;
				bBlank = truth;
				bFirst = truth;
			}
			else;
		}
		else
		{
			output[y] = input[i];
			y++;
			bBlank = fault;
			bFirst = fault;
		}
	}
	output[y] = NULL;

	printf("\nThe result is:\n %s",output);
	printf("\nByeBye!!\n ");
	return 0;
}