99. Check if the String Numeric or Alphabetic

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Code

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

void classify_string(const char *str) {
    const char *ptr = str;
    int length = strlen(str);
    int alpha = 0;
    int digit = 0;
    while(*ptr != '\0'){
        if((*ptr >= 65 && *ptr <=90) || (*ptr >= 97 && *ptr <= 122)){
            alpha++ ;
        }
        else if (*ptr >= 48 && *ptr <= 57){
            digit++ ;
        }
        ptr++;
    }

    if(alpha == length){
        printf("ALPHABETIC");
    }
    else if (digit == length){
        printf("NUMERIC");
    }
    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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