#include <stdlib.h>
#include <stdio.h>

int main()
{
    char *str = "Tom 28";
    char name[10];
    int age, ret;

    printf("str= %sn", str);
    ret = sscanf(str, "%s %d", name, &age);
    printf("Name: %sn", name);
    printf("Age: %dn", age);

    str[12] = '5';

    printf("str= %sn", str);
    ret = sscanf(str, "%s %d", name, &age);
    printf("Name: %sn", name);
    printf("Age: %dn", age);

    exit( 0 );
}

str= Tom 28
Name: Tom
Age: 28