這個小程序就是自己學習用的
第一次實踐式的寫一個程序,紀念一下,哈哈~~
程序功能描述:
0 - “_”
1 - “a”
2 - “b”
……….
25 - “y”
26 - “z”
27 - “.”
可以互相進行查詢
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
int i, j = 0, length, code[28];
char str[1000];
//對code數組按照要求賦值
//"_" ASCII value is 95
//"." ASCII value is 46
//"a" ASCII valude is 97
code[0] = '_';
code[27] = '.';
for(i = 1; i < 27; i++)
{
code[i] = 'a' + i - 1;
}
printf("PS: \"-1\" means END!!\n");
printf("Please input the num or letter:<0-27 | a-z | \"_\"| \".\" only>\n");
while(scanf("%s", str))
{
length = strlen(str);
if(length == 1)
{
if((str[0] < 'a' || str[0] > 'z') && str[0] != '_' && str[0] != '.' && (str[0] < '0' || str[0] > '9'))
{
printf("Input Error! Input again:\n");
}
else
{
for(i = 0; ; i++)
{
//char型數據處理
if((str[0] - 'a') >= 0)
{
if(code[i] == str[0])
{
printf("The %c is %d\n", str[0], i);
break;
}
}
else if(str[0] == '_' || str[0] == '.')
{
if(str[0] == '_')
{
printf("The _ is %d\n", 0);
break;
}
else if(str[0] == '.')
{
printf("The . is %d\n", 27);
break;
}
}
//int型數據處理
else if(i == atoi(str))
{
printf("The %d is %c\n", i, code[i]);
break;
}
}
}
}
else if(length == 2)
{
//先處理正確的
//
//
//int型的兩位數處理
if(((atoi(str) - 10) >= 0) && ((atoi(str) - 27) <= 0) && atoi(str) != -1)
{
for(i = 10; ; i++)
{
if(i == atoi(str))
{
printf("The %d is %c\n", i, code[i]);
break;
}
}
}
else if(atoi(str) == -1)
{
printf("The program ENDED!!\n");
return 0;
}
else
{
printf("Input Error! Input again!\n");
}
}
else
{
printf("Input Error! Input again!\n");
}
}
return 0;
}