Check if the String Numeric or Alphabetic

Code

#include <stdio.h>
#include <stdint.h>

void classify_string(const char *str) {
    // Your logic here
    int num=0;
    int alpha=0;
    int mix=0;
    
    while (*str!='\0'){
        if ((*str>='a'&&*str<='z')||(*str>='A'&&*str<='Z')){
          
            alpha++;
        }
        else if (*str<='9'&&*str>='0') {
            num++;
        }
        else {
            mix++;
        }
       str++;
    }
    
    
    if (num>0&&alpha==0&&mix==0){
        printf("NUMERIC");
    }
    else if (num==0&&alpha>0&&mix==0){
        printf("ALPHABETIC");
    }
    else {
          printf("MIXED");
    }
}

int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    uint8_t i = 0;
    while (str[i]) {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
        i++;
    }

    classify_string(str);
    return 0;
}

Solving Approach

 

 

 

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Input

123456

Expected Output

NUMERIC