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, numFlag = 0, alphaFlag = 0, symFlag = 1;

    for(i = 0; str[i]; i++ ) {

        if(str[i]>= '1' && str[i] <= '9') {
            numFlag = 1;
        } else if ((str[i]>= 'a' && str[i] <= 'z') || (str[i]>= 'A' && str[i] <= 'Z')) {
            alphaFlag = 1;
        } else  {
           symFlag = 1;
           printf("MIXED");
           return;
        }
    }

    if (alphaFlag && !numFlag) {
        printf("ALPHABETIC"); 
        return;
    } else if (numFlag && !alphaFlag) {
        printf("NUMERIC"); 
        return;
    } else  if (numFlag && alphaFlag)  {
        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

void classify_string(const char *str) {
    // Your logic here
    int i = 0, numFlag = 0, alphaFlag = 0, symFlag = 1;

    for(i = 0; str[i]; i++ ) {

        if(str[i]>= '1' && str[i] <= '9') {
            numFlag = 1;
        } else if ((str[i]>= 'a' && str[i] <= 'z') || (str[i]>= 'A' && str[i] <= 'Z')) {
            alphaFlag = 1;
        } else  {
           symFlag = 1;
           printf("MIXED");
           return;
        }
    }

    if (alphaFlag && !numFlag) {
        printf("ALPHABETIC"); 
        return;
    } else if (numFlag && !alphaFlag) {
        printf("NUMERIC"); 
        return;
    } else  if (numFlag && alphaFlag)  {
        printf("MIXED");
    }
}