输入字符串,统计字符串中字符个数,大写字母个数和小写字母个数,并将...

发布网友发布时间：2024-03-09 02:52

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热心网友时间：2024-03-12 00:33

C语言源码及注释如下(运行结果见附图)：

#include <stdio.h> /* standard input & output support */

int main (int argc, const char * argv[])

{

char input[1024] = {0};

printf("Please input a string:");

scanf("%s", input);

printf("string(old) = %s\n", input);

int tcount = 0; /* 总字符数 */

int lcount = 0; /* 小写字母数 */

int ucount = 0; /* 大写字符数 */

char *p = input;

while (*p != '\0')

{

if (*p >= 'a' && *p <= 'z')

{

lcount++;

*p &= 0xDF; /* 小写字母变大写字母 */

}

else if (*p >= 'A' && *p <= 'Z')

{

ucount++;

}

tcount++;

p++;

}

printf("It contains %d character(s), %d uppercase letter(s) and %d lowercase letter(s).\n",

tcount, ucount, lcount);

printf("string(new) = %s\n", input);

return 0;

}

热心网友时间：2024-03-12 00:26

#include <stdio.h>
#define N 200
void count(char *);
int main()
{
char *ch,chr;
ch=malloc(N+1);
printf("请输入输入一行字符：\n");
gets(ch);
count(ch);
getchar();
}

void count(char *ch)
{
char *temp=ch;
int i, upper=0,lower=0,digit=0;
while(*ch != '\0')
{
if(*ch>='A' && *ch<='Z' )
upper++;
else if(*ch>='a' && *ch<='z')
{*ch=*ch+'A'-'a';
lower++;}
digit++;
ch++;
}
printf("该字符串共有%d个字符，其中大写字母有%d个，小写字母有%d个。\n小写转换为大写后，字符串变成了：%s\n",digit,upper,lower,temp);
}

热心网友时间：2024-03-12 00:32

class Program
{
public static string newstring="";
public static string mymethod(string s)
{
int num1 = 0;
int num2 = 0;
int num3 = 0;

for (int i = 0; i < s.Length; i++)
{

char C = s[i];
int ASC = C;
if (ASC >= 65 && ASC <= 90)
{
num1 += 1;
newstring+=s[i];
}
else if (ASC >= 97 && ASC <= 122)
{
num2 += 1;
newstring+= s[i].ToString().ToUpper();
}
else if (ASC >= 48 && ASC <= 57)
{
num3 += 1;
newstring += s[i];
}
}
string result = "字符串中大写字母数为" + num1 + "个，小写字母数为" + num2 + "个，数字为" + num3 + "个";
return result;
}
static void Main(string[] args)
{
Console.WriteLine("请输入一个字符串");
string s = Console.ReadLine();
Console.WriteLine(mymethod(s));
Console.WriteLine("将小写字母全部转换为大写字母结果为:");
Console.WriteLine(newstring);
Console.ReadKey();
}
}