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Check if the String Numeric or Alphabetic

Code

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

void classify_string(const char *str) {
    
    int df=0,cf=0,mf=0;

    do
    {
            if(*str>=48 &&*str<=58)
            {
                df++;
            }
            else if(*str>=65 && *str<=90 || *str>=97 && *str<=122 )
            {
                cf++;
            }
            else if(*str!='\0')
            {
                df++;
            }

            
    }while(*str++!='\0');
            if(cf>0 && df>0)
            {
                printf("MIXED");
            }
            else if(cf>0 && df==0)
            {
                printf("ALPHABETIC");

            }

            else if(df>0 && cf==0)
            {
                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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Input

123456

Expected Output

NUMERIC