[問題] Segmentation fault (core dumped)
出現問題的code如下
if(argc==3){
if( strcmp(argv[1], "-g") == 0 ){
struct group *data;
char gp[50];
int i=0;
strcpy(gp, argv[2] );
data = getgrnam("gp");
If(data != NULL){
while(data -> gr_mem[i]){
printf("%s\n",data->gr_mem[i++]);
}
}
}
}
compiler沒有問題.但想要執行這段的時候顯示
Segmentation fault (core dumped)
我試過把strcpy這行改成strncpy(gp, argv[2],10 );
但還是一樣
想請問是哪裡出了錯誤？
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05/29 21:08, , 1F
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※ 編輯: proud (49.219.132.106), 05/29/2015 21:14:05
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05/29 21:17, , 3F
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Thanks
※ 編輯: proud (49.219.132.106), 05/29/2015 21:26:49
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05/30 00:04, , 5F
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好的，謝謝建議
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05/30 01:27, , 7F
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只是錯誤點不像是長度啊
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對，只是如果直接放入的話會接到後面的迴圈，後來就改下面的code，裡面直接放argv[]
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05/30 12:08, , 13F
05/30 12:08, 13F
proud: 感謝大家幫忙！ 我最後就不strcpy 字串，直接在裡面放入argv []
05/30 13:33
※ 編輯: proud (49.217.16.219), 05/30/2015 13:37:59
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05/30 22:59, , 14F
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