如何使用检查数字的功能解决字符串中计算字母，符号，数字的问题

Question

我想使用函数密码计算字母，数字，符号 似乎它没有正确计算数字，因为我最终每次打印都得到 0

#include <stdio.h>
void password(char * str[],int together,int numbers,int symbols,int i,int uppercase,int lowercase);
int main()
{
    char str[100];
    int together, numbers, symbols, i,uppercase,lowercase;
        together = numbers = symbols = i = uppercase = lowercase = 0;
    printf("password : ");
    gets(&str);
    printf(" %s", str);
    password(&str,together,numbers,symbols,i,uppercase,lowercase);
    printf("Number of letters = %dn", together);
    printf("number uppercase  = %dn", uppercase);
    printf("Number lowecase  = %dn", lowercase);
    printf("numbers = %dn", numbers);
    printf("Simboli = %d", symbols);
if (together >= 8 && numbers >= 2){
    printf("nPassword is correct");
}else{
    printf("nPassword isn't correct");
}
    return 0;
}
void password(char * str[],int together,int numbers,int symbols,int i,int uppercase,int lowercase){
     while(*str[i]!='')
    {
        if((*str[i]>='a' && *str[i]<='z') || (*str[i]>='A' && *str[i]<='Z'))
        {
            together++;
        }
        else if(*str[i]>='0' && *str[i]<='9')
        {
            numbers++;
        }
        else if(*str[i] >= 'A' && *str[i] <= 'Z') {
         uppercase++;
        }
        else if(*str[i] >= 'a' && *str[i] <= 'z'){
            lowercase++;
        }
        else
        {
            symbols++;
        }
        i++;
    }
}

我

为每个数字，字母和符号程序运行而没有任何错误，我尝试更改一些东西，但我目前正在学习C，所以对我来说很难！

Answer 1

几点： 1(没有必要传递i作为参数，因为您可以从string.h中获取带有strlen的字符串长度(返回size_t类型而不是int(。 2(你把参数作为值传递，这意味着它们只会在本地更改为你的函数。3(不要使用不安全的get函数，你可能想用fgets或scanf。

#include <string.h>
#include <stdio.h>
void password(char *str, int *together, int *numbers, int *symbols, int *uppercase, int *lowercase){
    for(size_t i=0; i<strlen(str); i++){
        if(str[i] >= '0' && str[i] <= '9') (*numbers)++;
        if(str[i] >= 'A' && str[i] <= 'Z') (*uppercase)++;
        if(str[i] >= 'a' && str[i] <= 'z') (*lowercase)++;
        if(str[i] >= '!' && str[i] <= '/') (*symbols)++;
    }
    *together = (*uppercase) + (*lowercase);
}
int main(void){
    char str[100] = "Pa$$w0/2d";
    int together = 0;
    int numbers = 0;
    int symbols = 0;
    int uppercase = 0;
    int lowercase = 0;
    password(str, &together, &numbers, &symbols, &uppercase, &lowercase);
    printf("Letters = %dn", together);
    printf("Uppercase  = %dn", uppercase);
    printf("Lowercase = %dn", lowercase);
    printf("Numbers = %dn", numbers);
    printf("Symbols = %dn", symbols)
    return 0;
}