Check if the String Numeric or Alphabetic

Code

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

void classify_string(const char *str) {
    int i=0;
    int digit=0;
    int alpha=0;
    int mix = 0;
    while(*(str+i)!='\0'){
        if(*(str+i)>='0'&& *(str+i)<='9'){
            digit = 1;

      //    printf("NUMERIC\n");  
        }

        else if((*(str+i)>=65 && *(str+i)<=90)||(*(str+i)>=97 && *(str+i)<=122)) {
            alpha=1;
    }
       else{
            mix=1;
            }
        
        i++;
    

}
if(mix==0){
if(alpha == 0 && digit == 1){
    printf("NUMERIC\n");
}
else if(alpha == 1 && digit == 0){
    printf("ALPHABETIC\n");
}
else{
    printf("MIXED\n");
}}
if(mix==1){



 
    printf("MIXED\n");



}}



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