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高级语言的程序基本结构IPO，分别指input、___________、output。
参考答案和解析
B
更多 “高级语言的程序基本结构IPO，分别指input、___________、output。” 相关考题
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下列中没有语法错误的pascal程序首部是( )。
Aprogram a1Bprogram a1(output)Cprogram(input,output)Dprogram a1(inputoutput)
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试题一（共20分）阅读下列说明，回答问题1至问题3,将解答填入答题纸的对应栏内。【说明】逻辑覆盖法是设计白盒测试用例的主要方法之一，通过对程序逻辑结构的遍历实现程序的覆盖。针对以下由C语言编写的程序，按要求回答问题。int XOR（char * filename, unsigned long key）{FILE* input = NULL，*output = NULL; //1char *outfilename = NULL;int len = strlen（filename）;unsigned charbuffer;if（ （filename[len-2] == ‘.’） （filename[len-l]== ‘c’））{ //2,3outfilename = new char[len+l]; //4strcpy（outfilename,filename）; outfilename[len-2] = ‘\0’；}else{ //5outfilename = new char[len+5];strcpy（outfilename , filename）;strncat（outfilename,”.c”,2）;}input = fopen（filename，”rb”）;if（ input = NULL）{ //6coutError opening file filenameendl ; //7delete [] outfilename;outfilename = NULL;return 1;}output = fopen（outfilename,”wbf”）;if（ utput =NULL） { //8coutError creating output file ” outfilename endl; //9delete []outfilename;outfilename =NULL;return 1;}while（! feof（input） ）{ //10if（ fread（buffer,sizeof（unsigned char）, 1,input） != 1 ）{ //11if（ ! feof（input））{ //12delete [] outfilename; //13outfllename = NULL;fclose（input）;fclose（output）;return 1;}}else{ //14buffer A= key;fwrite（buffer,sizeof（unsigned char）, 1,output）;}}fclose（input）;fclose（output）;delete []outfllename;return 0;}【问题1】（6分）请给出满足100%DC （判定覆盖）所需的逻辑条件。【问题2】（10分）请画出上述程序的控制流图，并计算其控制流图的环路复杂度V（G）。【问题3】（4分）请给出问题2中控制流图的线性无关路径。
考题
逻辑覆盖法是设计白盒测试用例的主要方法之一，通过对程序逻辑结构的遍历实现程序的覆盖。针对以下由C语言编写的程序，按要求回答问题。
int XOR(char * filename,unsigned long key){ FILE * input = NULL , *output =NULL; //i char * outfilename = NULL; int len = strlen(filename); unsigned char buffer; if( (filename[len-2] == '.') //4 strcpy(outfilename, filename); outfilename[len-2] = '\0'; } else{ //5 outfilename = new char[len+5]; strcpy(outfilename, filename); strncat(outfilename,".c",2); } input =fopen(filename,"rb"); if( input == NULL) { //6 cout ＜＜ "Error opening file " ＜＜ filename ＜＜ endl; //7 delete [] outfilename; outfilename = NULL; return 1; } output =fopen(outfilename,"wb"); if( output == NULL ) { //8 cout ＜＜ "Error creating output file " ＜＜ outfilename ＜＜ endl; //9 delete [] outfilename; outfilename = NULL; return 1; } while( ! feof(input) ) { //10 if(fread( //13 outfilename = NULL; fclose(input); fclose(output); return 1; } } else{ //14 buffer ^= key; fwrite( } } fclose(input); //15 fclose(output); delete [] outfilename; return 0; }
请给出满足100%DC(判定覆盖)所需的逻辑条件。
考题
阅读下列说明，回答问题。
【说明】
逻辑覆盖法是设计白盒测试用例的主要方法之一，通过对程序逻辑结构的遍历实现程序的覆盖。针对以下由C语言编写的程序，按要求回答问题。
int XOR(char * filename,unsigned long key){ FILE * input = NULL , *output =NULL; //i char * outfilename = NULL; int len = strlen(filename); unsigned char buffer; if( (filename[len-2] == '.') //4 strcpy(outfilename, filename); outfilename[len-2] = '\0'; } else{ //5 outfilename = new char[len+5]; strcpy(outfilename, filename); strncat(outfilename,".c",2); } input =fopen(filename,"rb"); if( input == NULL) { //6 cout ＜＜ "Error opening file " ＜＜ filename ＜＜ endl; //7 delete [] outfilename; outfilename = NULL; return 1; } output =fopen(outfilename,"wb"); if( output == NULL ) { //8 cout ＜＜ "Error creating output file " ＜＜ outfilename ＜＜ endl; //9 delete [] outfilename; outfilename = NULL; return 1; } while( ! feof(input) ) { //10 if(fread( //13 outfilename = NULL; fclose(input); fclose(output); return 1; } } else{ //14 buffer ^= key; fwrite( } } fclose(input); //15 fclose(output); delete [] outfilename; return 0; }
请画出上述程序的控制流图，并计算其控制流图的环路复杂度VG.
考题
逻辑覆盖法是设计白盒测试用例的主要方法之一，通过对程序逻辑结构的遍历实现程序的覆盖。针对以下由C语言编写的程序，按要求回答问题。
阅读下列说明，回答问题。 【说明】 逻辑覆盖法是设计白盒测试用例的主要方法之一，通过对程序逻辑结构的遍历实现程序的覆盖。针对以下由C语言编写的程序，按要求回答问题。 int XOR(char * filename, unsignedlong key){ FILE * input = NULL , *output =NULL; //i char * outfilename = NULL; int len = strlen(filename); unsigned char buffer; if( (filename[len-2] == '.') //4 strcpy(outfilename, filename); outfilename[len-2] = '\0'; } else{ //5 outfilename = new char[len+5]; strcpy(outfilename, filename); strncat(outfilename,".c",2); } input =fopen(filename,"rb"); if( input == NULL) { //6 cout ＜＜ "Error opening file " ＜＜ filename ＜＜ endl; //7 delete [] outfilename; outfilename = NULL; return 1; } output =fopen(outfilename,"wb"); if( output == NULL ) { //8 cout ＜＜ "Error creating output file " ＜＜ outfilename ＜＜ endl; //9 delete [] outfilename; outfilename = NULL; return 1; } while( ! feof(input) ) { //10 if(fread( //13 outfilename = NULL; fclose(input); fclose(output); return 1; } } else{ //14 buffer ^= key; fwrite( } } fclose(input); //15 fclose(output); delete [] outfilename; return 0; }
请给出问题2中控制流图的线性无关路径。
考题
阅读下列说明，回答问题。 【说明】 逻辑覆盖法是设计白盒测试用例的主要方法之一，通过对程序逻辑结构的遍历实现程序的覆盖。针对以下由C语言编写的程序，按要求回答问题。 int XOR(char * filename, unsigned long key){ FILE * input = NULL , *output = NULL; //1 char * outfilename = NULL; int len = strlen(filename); unsigned char buffer; if( (filename[len-2] == '.') //4 strcpy(outfilename, filename); outfilename[len-2] = '\0'; } else{ //5 outfilename = new char[len+5]; strcpy(outfilename, filename); strncat(outfilename,".c",2); } input = fopen(filename,"rb"); if( input == NULL) { //6 cout ＜＜ "Error opening file " ＜＜ filename ＜＜ endl; //7 delete [] outfilename; outfilename = NULL; return 1; } output = fopen(outfilename,"wb"); if( output == NULL ) { //8 cout ＜＜ "Error creating output file " ＜＜ outfilename ＜＜ endl; //9 delete [] outfilename; outfilename = NULL; return 1; } while( ! feof(input) ) { //10 if( fread( //13 outfilename = NULL; fclose(input); fclose(output); return 1; } } else{ //14 buffer ^= key; fwrite( } } fclose(input); //15 fclose(output); delete [] outfilename; return 0; }4.1、请给出满足100%DC(判定覆盖)所需的逻辑条件。(3分)4.2、请画出上述程序的控制流图，并计算其控制流图的环路复杂度V(G)。(7分)4.3、请给出问题2中控制流图的线性无关路径。(5分)
考题
下列选项中属于过滤流Filter Input Stream的子类的是（）。A、Data Input StreamB、Data Output StreamC、Print StreamD、Buffered Output Stream
考题
编译程序是将（）翻译成（）。A、汇编语言程序；机器语言程序B、高级语言程序；汇编语言程序或机器语言程序C、汇编语言程序或高级语言程序；机器语言程序或高级语言程序D、高级语言程序；机器语言程序或高级语言程序
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在自动驾驶的诊断页面中有哪些方式？A、INPUT，OUTPUT，DIAGNOSTICSB、INPUT，REPORT，DIAGNOSTICSC、REPORT OUTPUT DIAGNOSTICSD、REPORT，INPUT，OUTPUT
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单选题Operational amplifiers, used primarily in analog circuits, are characterized by（）A
high input impedance, high gain and low output impedanceB
high input impedance, high gain and high output impedanceC
low input impedance, low gain and high output impedanceD
low input impedance, high gain and low output impedance
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单选题下列选项中属于过滤流Filter Input Stream的子类的是（）。A
Data Input StreamB
Data Output StreamC
Print StreamD
Buffered Output Stream
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