linux c语言打印内存情况

#include <stdio.h>

int main() {
    int var = 10;
    int *ptr = &var;

    printf("Value of var: %d\n", var);
    printf("Address of var: %p\n", (void*)&var);
    printf("Value at address %p: %d\n", (void*)ptr, *ptr);

    // 打印内存地址附近的几个字节
    unsigned char *byte_ptr = (unsigned char*)ptr;
    for (int i = -5; i <= 5; i++) {
        printf("Byte at address %p: 0x%02X\n", (void*)(ptr + i), byte_ptr[i]);
    }

    return 0;
}

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

void print_memory_info() {
    FILE *meminfo = fopen("/proc/meminfo", "r");
    if (meminfo == NULL) {
        perror("Failed to open /proc/meminfo");
        return;
    }

    char line[256];
    while (fgets(line, sizeof(line), meminfo)) {
        printf("%s", line);
    }

    fclose(meminfo);
}

int main() {
    print_memory_info();
    return 0;
}