#include<stdio.h> #include<conio.h> #include<stri
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共2个回答
热心网友
把第二个if改成else if就行了
#include<stdio.h>#include<conio.h>
#include<string.h>
int main()
{
char str[30], str1[30];
int i, len;
printf("输入字符串\n");
gets(str);
len = strlen(str);
for (i = 0; i <= len; i++)
{
if (str[i] >= 'A' && str[i] <= 'Z')
str1[i] = str[i] + 3;
else if (str[i] >= 'a' && str[i] <= 'z')
str1[i] = str[i] - 4;
else
str1[i] = str[i];
}
puts(str1);
return 0;
}
热心网友
少了个else:
if(str[i]>='a' && str[i]<='z')
改为
else if(str[i]>='a' && str[i]<='z')
