block.c

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

struct Person {
    char* name;
    void (^say)(void);
};

struct Person *PersonNew(char *name) {
    struct Person *self = malloc(sizeof(struct Person));
    self->name = name;
    self->say =  ^ {
        printf("Hello my name is %s\n", self->name);
    };
    return self;
}

int main() {
    struct Person *jim = PersonNew("Jim Green");
    jim->say();
    free(jim);
    return 0;
}