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) {
int i=0;
int alpha=0;
int num=0;
int mix=0;
while(str[i]!='\0'){
    if(str[i]>='0' && str[i]<='9'){
        num++;
    }
    else if(str[i]>='A' && str[i]<='Z'){
        alpha++;
    }
    else if(str[i]>='a' && str[i]<='z'){
        alpha++;
    }
    else mix=1;

    i++;
}
if(num!=0 && alpha==0) printf("NUMERIC\n");
else if (alpha!=0 && num==0 && mix==0) printf("ALPHABETIC\n");
else 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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