#include <stdio.h> int main() { char c; int letterCount = 0, spaceCount = 0, digitCount = 0, otherCount = 0; printf("请输入一些字符:\n"); while ((c = getchar()) != '\n') { if ((c >= 'a' && c <= 'z') || (c >= 'A' && c
(PCRYPT_DATA_BLOB pEncodedData, LPWSTR pwszSignerName);// Define function MyHandleError.voidMyHandleError(LPTSTR psz){ _ftprintf(stderr, TEXT("An error occurred in the program. \n")); _ftprintf(stderr, TEXT("%s\n"), psz); _ftprintf(stderr, TEXT("Error number %x.\n"), ...
错误命名案例包括：3d_block（数字开头）、char（关键字）、price$（非法符号）。正确命名如sensor_data、buffer_size、temp_value。常见疑问包括是否可用中文变量名。C11标准支持但降低可移植性，建议使用英文命名。连续下划线如__var属于编译器保留标识符，用户变量建议单下划线开头。全局变量应具有描述性，如g_system_...
#includeint main(){ char c; printf("Input a character:"); c=get); if(c<32) this="" is="" a="" else="" c="">='0'&&c<='9') this="" is="" a="" else="" c="">='A'&&c<='z') this="" is="" a="" capital="" else="" c="">='a'&&c<='z') printf("T...
因为if语句中,会根据条件依次判断,如果前一个条件已经可以判定整个条件,则后续条件语句不会再运行,所以可能导致期望的部分赋值没有得到运行。 错误示例: intmain(intargc,char*argv[],char*envp[]){inta =0;intb;if((a ==0) || ((b = fun1) >10)){printf("a: %d\n", a);}printf("b: %d\n...
#include <stdio.h> int main() { char c; printf("输入一个字符: "); scanf("%c",&c); if( (c>='a' && c<='z') || (c>='A' && c<='Z')) printf("%c 是字母",c); else printf("%c 不是字母",c); return 0; }复制 运行结果: 输入一个字符: a a 是字...
#include<stdio.h>#include<windows.h>#include<Wincrypt.h>#defineMY_ENCODING_TYPE (PKCS_7_ASN_ENCODING | X509_ASN_ENCODING)voidMyHandleError(char*s);voidmain(void){//---// Copyright (C) Microsoft. All rights reserved.// Declare and initialize variables.HCERTSTORE hSystemStore;// System...
intmain() {charletter ='a';while(letter !='x') { cout <<"Please enter a letter."<< endl; cin.get(letter);if(isalpha(letter) && letter !='x') { cout <<"The letter you entered is "<< letter << endl; cout << endl; cin.clear(); }elseif(letter !='x'&& !isalpha(letter...
finite() — Determine the infinity classification of a floating-point number __flbf() — Determine if a stream is line buffered fldata() — Retrieve file information flocate() — Locate a VSAM record flockfile()— stdio locking floor(), floorf(), floorl() — Round down to inte...
若输入a, 其前一个字母用 Z, 若输入z, 其后一个字母用 A 输入其它字符,则输出其前后字符。includeint main(){ char a,b,c;float F,C;printf("input a lower case char");c=getchar();if (c >='a' && c <= 'z') { c = c -'a'+'A';if (c == 'A') ...