C语言在编译时都依赖libc库，为什么？因为main函数之前和之后的工作都“藏”在libc里面。我们首先看一下...
2.1. Kernels CUDA C extends C by allowing the programmer to define C functions, called kernels, that, when called, are executed N times in parallel by N different CUDA threads, as opposed to only once like regular C functions. A kernel is defined using the __global__ declaration speci...
regfree():When a memory address associated with a preg that was allocated by theregcomp()function needs to be freed and the preg is no longer a compiled regular expression, we utilize the regfree() function. regerror():This function is used to return an error message when theregcomp()or...
正则表达式,又称规则表达式,(Regular Expression,在代码中常简写为regex、regexp或RE),是一种文本模式。它可以用来检查一个字符串是否符合某个规则,或者从一个字符串中提取出符合某个规则的子串。正则表达式通常被用来检索、替换那些符合某个模式(规则)的文本。 正则表达式是由普通字符(例如字符 a 到 z)以及特殊字符...
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fprintf(stderr, "Failed to compileregular expression\n"); return 1; } const char *test_string = "abbbcde"; ret = regexec(®ex, test_string, 0, NULL, 0); if (ret == 0) { printf("Match\n"); } else if (ret == REG_NOMATCH) { ...
c/c++语言具备一个不同于其他编程语言的的特性,即支持可变参数。 例如C库中的printf,scanf等函数,都支持输入数量不定的参数。printf函数原型为 int printf(const char *format, …); printf("hello world");///< 1个参数printf("%d", a);///< 2个参数printf("%d, %d", a, b);///< 3个参数 测...
completely multiplicative function 完全积性函数completely primary ring 完全准素环completely reducible 完全可约的completely reducible group 完全可约群completely regular filter 完全正则滤子completely regular space 完全正则空间completely regular topology 完全正则拓扑completely separated sets 完全可离集completely ...
=REG_NOMATCH){/* RegExp Error */regerror(reti,®ex,msgbuf,sizeof(msgbuf));fprintf(stderr,"Regex match failed: %s\n",msgbuf);regerr=1;break;}}kseq_destroy(seq);// destroy seqgzclose(fp);// close the file handlerregfree(®ex);/* Free compiled regular expression */returnregerr?