進程的記憶體位址

/* * 進程地址空間 驗證 * * bss: block started by symbol 存放程式中未初始化的全域變數 * data segment: 資料區段，存放已初始化的全域變數 * code segment: 程式碼片段，存放程式執行代碼的一塊記憶體地區 * heap: 堆，存放動態分配的記憶體段，大小不固定，動態擴張或縮減 * stack: 棧，存放局部變數 */int g_u_a1;int g_a2 = 1;static int g_s_u_b1;static int g_s_b2 = 1;int main(){    static int s_u_c1;    static int s_c2 = 1;    int u_d1;    int d2 = 1;    printf("global uninit addr: %x, init addr: %x\n", &g_u_a1, &g_a2);    printf("global uninit static addr: %x, init static addr: %x\n", &g_s_u_b1, &g_s_b2);    printf("local uninit static addr: %x, init static addr: %x\n", &s_u_c1, &s_c2);    printf("local uninit addr: %x, init addr: %x\n", &u_d1, &d2);    return 0;}

output：

global uninit addr: 804a030, init addr: 804a014global uninit static addr: 804a028, init static addr: 804a018local uninit static addr: 804a02c, init static addr: 804a01clocal uninit addr: bfa3815c, init addr: bfa38158

未初始化全域static，未初始化區部static 變數在bss中

初始化全域static，初始化區部static 變數在資料區段中