99. Check if the String Numeric or Alphabetic

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Code

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

void classify_string(const char *str) {
    // Your logic here
    bool dig=false;
    bool alp=false;
    while(*str){
        
        if(*str>='0' && *str<='9'){
            if(alp) {printf("MIXED"); return;}
            dig=true;
        }
        else if(((*str>='a') && (*str<='z')) || ((*str>='A') && (*str<='Z'))){
            if(dig) {printf("MIXED");return;}
            alp=true;
        }
        else {printf("MIXED"); return;}
        str++;
    }
    if(alp) printf("ALPHABETIC");
    else printf("NUMERIC");
}

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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