Check if the String Numeric or Alphabetic

Code

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

void classify_string(const char *str) {
    // Your logic here
    int i=0;int n=0,a=0;
    while(str[i]!='\0'){
        if(str[i]>='0'&&str[i]<='9'){
            n = 1;
        }
        else if((str[i]>='A'&&str[i]<='Z')||((str[i]>='a'&&str[i]<='z'))){
            a=1;
        }
        else{
            a=0;n=0;
        }
        i++;

    }

    if(n&~(a)){
        printf("NUMERIC");
    }
    else if(a&~(n)){
        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