Jim Hall

Jan 29, 2025 | lbc.co.uk | Jim Hall

I work on Britain's biggest building projects - the real growth blocker is cost not capability 29 January 2025, 07:46 | Updated: 29 January 2025, 07:50 I work on Britain's biggest building projects - the real growth blocker is cost not capability. Picture: Alamy By Jim Hall As a civil engineer, I’m always saddened to be asked why the UK doesn’t build anymore, or whether it should accept that it is no longer a place for large infrastructure projects.

Jul 18, 2023 | linux.cn | Jim Hall

在 C 语言中读取字符串是一件非常危险的事情。当读取用户输入时，程序员可能会尝试使用 C 标准库中的 gets 函数。它的用法非常简单： char *gets(char *string); gets() 从标准输入读取数据，然后将结果存储在一个字符串变量中。它会返回一个指向字符串的指针，如果没有读取到内容，返回 NULL 值。 举一个简单的例子，我们可能会问用户一个问题，然后将结果读入字符串中： #include <stdio.h> #include <string.h> int main() {   char city[10]; // 例如 "Chicago"   // 这种方法很糟糕 .. 不要使用 gets   puts("Where do you live?");   gets(city);   printf("<%s> is length %ld\n", city, strlen(city));   return 0; } 输入一个相对较短的值就可以： Where do you live?