#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char *str_func(char *str, char ch, int num)
{
    int i, j = 0, size=0,count=0,temp=num;
    char* new_str = (char *)malloc(sizeof(str) * sizeof(char));
    for (i = 0; str != '\0'; i++)
    {
        if (num >= 0)
        {
            if (str[i] != ch)
            {
                new_str[j++] = str[i];
                new_str = (char*)(new_str, ++size * sizeof(char));
            }
        }
        count++;
    }
    if (temp <= count)
    {
        str[size - 1] = '\0';
        strcat(new_str, (str + temp));
    }
    else
        return NULL;
    return new_str;

}

void main()
{
    char str[] = "heoolloo my noame is bob";
    char *str1;
    str1 = str_func(str, 'o', 30);
    printf("%s\n", str1);

}