在一个字符数组中存放“AbcDEfg”字符串，编写程序，把该字符串中的小写字母变为大写字母，把该字符串中的 c++编程题 输入一个字符串,存入数组a,将其复制到数组b,...
\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u7edf\u8ba1\u5176\u4e2d\u7684\u5927\u5199\u5b57\u6bcd\uff0c\u5c0f\u5199\u5b57\u6bcd\uff0c\u6570\u5b57\u5b57\u7b26\u30021\u3001\u7f16\u5199\u4ee3\u7801\uff0c\u7edf\u8ba1\u5927\u5199\u5b57\u6bcd\u6570\u91cf\uff0c
int cnt_upper = 0;
String regex_u = "[A-Z]";
Pattern p3 = Pattern.compile(regex_u);
java.util.regex.Matcher m3 = p3.matcher(str);
while (m3.find()) {
cnt_upper++;
}
System.out.print("\u5927\u5199\u5b57\u6bcd\u6570\u91cf:");
System.out.println(cnt_upper);
2\u3001\u7f16\u5199\u4ee3\u7801\uff0c\u7edf\u8ba1\u5c0f\u5199\u5b57\u6bcd\u6570\u91cf\uff0c
int cnt_lower = 0;
String regex_l = "[a-z]";
p3 = Pattern.compile(regex_l);
m3 = p3.matcher(str);
while (m3.find()) {
cnt_lower++;
}
System.out.print("\u5c0f\u5199\u5b57\u6bcd\u6570\u91cf:");
System.out.println(cnt_lower);
3\u3001\u7f16\u5199\u4ee3\u7801\uff0c\u7edf\u8ba1\u6570\u5b57\u6570\u91cf\uff0c
int cnt_num = 0;
String regex_n = "[0-9]";
p3 = Pattern.compile(regex_n);
m3 = p3.matcher(str);
while (m3.find()) {
cnt_num++;
}
System.out.print("\u6570\u5b57\u6570\u91cf:");
System.out.println(cnt_num);
4\u3001\u8f93\u5165\u6d4b\u8bd5\u5b57\u7b26\u4e32\uff0cString str = "A123Bde456EfG"\uff0c\u6267\u884c\u7a0b\u5e8f\uff0c\u8f93\u51fa\u6d4b\u8bd5\u7ed3\u679c\uff0c
\u5982\u679c\u662f\u6570\u7ec4, \u5728a,b\u8bbe\u7f6e\u4e00\u4e2ai\u548cj, \u6307\u5411\u5f53\u524d\u5143\u7d20, \u521d\u59cb\u6307\u5411\u7b2c\u4e00\u4e2a\u5143\u7d20. \u5982\u679ci\u548cj\u6240\u6307\u90fd\u6709\u5143\u7d20,\u6bd4\u8f83i,j\u6240\u6307\u5143\u7d20\u5927\u5c0f, \u628a\u5927\u7684\u590d\u5236\u5230c, \u5e76\u4e14\u76f8\u5e94\u7684i\u6216j+1.(\u8c01\u5927\u52a0\u8c01), c\u4e5f+1\u53f3\u79fb\u4e00\u4f4d,\u5982\u679ci\u6216j\u6ca1\u6709\u5143\u7d20,\u90a3\u4e48\u5c31\u5ffd\u7565\u6ca1\u6709\u5143\u7d20\u7684\u90a3\u4e2a\u8868, \u76f4\u63a5\u590d\u5236\u5269\u4e0b\u4e0b\u7684\u5230c .\u5faa\u73af\u7684\u505c\u6b62\u6761\u4ef6\u662fi\u548cj\u90fd\u6ca1\u6709\u5143\u7d20\u4e86. \u5982\u679c\u662f\u94fe\u8868, \u90a3\u4e48\u5c31\u4fee\u6539\u76f8\u5e94\u7684next\u57df, \u539f\u7406\u540c\u4e0a.\u4e0d\u7528\u521b\u5efa\u6216\u8005\u5220\u9664\u65b0\u8282\u70b9, \u800c\u662f\u5c06\u7ed3\u70b9\u987a\u5e8f\u91cd\u65b0\u89c4\u5212, \u6ce8\u610fnext\u57df\u7684\u4fee\u6539\u987a\u5e8f\u9632\u6b62\u6389\u94fe, \u4f60\u81ea\u5df1\u753b\u4e2a\u56fe\u7814\u7a76\u4e00\u4e0b\u5373\u53ef. \u6700\u540e\u8fbe\u5230\u7684\u6548\u679c\u662fa, b\u94fe\u8868\u90fd\u6d88\u5931, \u5f62\u6210\u4e00\u4e2ac\u94fe\u8868\u4ee5\u964d\u5e8f\u6392\u5217
#include <stdio.h>#include <stdlib.h>
int main()
{
char chs[]={'a','B','c','E','F','k','V'};
char *p=chs;
int i=0;
for(i=0;i<sizeof(chs);i++)
{
if(*(p+i)>=97 && *(p+i)<=122)
{
//小写字母ascii码范围：97-122
*(p+i)=*(p+i)-32;
//转换为对应的大写字母
}
}
*(p+i)='\0';
printf("%s\n",chs);
return 0;
}
#include <stdio.h>
int main()
{
char a[10] = "AbcDEfg";
char *p;
printf("array:\n");
printf("%s\n",a);
p = a;
while(*p)
{
if(*p>='A'&&*p<='Z')
{
*p += 32;
p++;
continue;
}
if(*p>='a'&&*p<='z')
{
*p -= 32;
p++;
continue;
}
}
printf("new array:\n");
printf("%s\n",a);
return 0;
}
效果：
C:\Documents and Settings\Owner\桌面>t
array:
AbcDEfg
new array:
aBCdeFG
C:\Documents and Settings\Owner\桌面>
toupper函数
绛旓細include <string.h> char a[80];//灏"abcd"淇濆瓨鍒癮涓 strcpy(a,"abcd");//杈撳嚭a涓殑瀛楃涓 puts(a);//灏"1234"淇濆瓨鍒癮涓 strcpy(a,"1234);//杈撳嚭a涓殑瀛楃涓 puts(a);
绛旓細C璇█涓紝涓嶄粎鍙互鏈瀛楃鈥榓bcd鈥瀛樺湪锛岃繕鍙互鏈夋眽瀛楋紝浣嗗畠浠兘鏄互鏈哄櫒鐮佺殑鏂瑰紡杩涜瀛樺偍鍜屼紶閫佺殑銆俛bcd1234鍜屾爣鐐规槸浠SCI鐮佸舰寮忓瓨鍌紝鍗犱竴涓瓧鑺傦紝姹夊瓧鏈夊嚑绉嶇紪鐮佹柟寮忥紝浣嗛兘鍗犱袱涓瓧鑺傘
绛旓細鎵浠ワ紝姝ｇ‘鐨勫垵濮嬪寲鏂瑰紡搴旇鏄痠nt a[10] = {'a', 'b', 'c', 'd', 0, 0, 0, 0, 0, 0}銆傛鏃鏁扮粍a鐨勫墠鍥涗釜鍏冪礌鍒嗗埆鏄'a', 'b', 'c', 'd'锛屽悗闈㈠叚涓厓绱犳槸0銆傚悓鐞嗭紝濡傛灉瑕佸皢鏁扮粍a鍒濆鍖栦负鍏0锛屽彲浠ヤ娇鐢╥nt a[10] = {0}鏉ヨ繘琛屽垵濮嬪寲銆傚湪 C 璇█涓紝瑕佹敞鎰忔暟缁勭殑鍒濆...
绛旓細鍙屽紩鍙风殑浣滅敤灏辨槸鍦ㄦ渶鍚庝竴涓厓绱犱箣鍚庡姞涓綅妯″紡涓0鐨勫厓绱..char str[] = "abcd";鍙互鐪嬫垚鏄痗har str[] = {'a','b','c','d',0};鐨勭畝鍐 int *p = &a杩欎釜涔嬪墠瑕佸厛澹版槑a 鏀逛负 int a=0, *p = &a;灏卞彲浠ヤ簡
绛旓細杩欐槸閿欑殑銆傜紪璇戝氨涓嶈兘閫氳繃銆俢har a涓彧鑳戒繚瀛樹竴涓瓧绗銆傝"ABCD"鏄竴涓瓧绗︿覆锛屽畠鐢5涓瓧绗︾粍鎴愶紙澶栧姞涓涓覆缁撴潫绗'\0'锛夈
绛旓細瀹氫箟浜哻鏄涓涓瓧绗︽暟缁鍏辨湁10涓厓绱燾[0]銆乧[1]鈥︹[9]锛屽洜涓烘病鏈夎祴鍒濆硷紝鎵浠ヨ繖10涓厓绱犵殑鍊奸兘鏄0銆傚鏋滃畾涔夋椂璧嬩簡鍒濆硷紝鎴栧湪绋嬪簭涓祴鍏冪礌鐨勫硷紝鍒欒鍏冪礌淇濆瓨瀵瑰簲瀛楃鐨凙SC鐮佸笺傚锛歝har c[10]="ABCD";鍒欏厓绱 a[0]=65 //'A'鐨凙SC鐮佹槸65 a[1]=66 //'B'鐨凙SC鐮佹槸66 a...
绛旓細褰撶劧鏄疌
绛旓細浣犲ソ锛侊紒涓嶆槸鐨勶細c璇硶瑙勫畾瀛楃鏁扮粍鐨勮祴鍊煎彧鑳藉湪澹版槑鐨勬椂鍊欙細char str[10];str[]={"ABCD"};鏈夌紪璇戦敊璇 鑰宑har str[10]={"ABCD"}琛ㄧず鎶婂瓧绗︿覆]"ABCD"鏀惧埌瀛楃鏁扮粍涓鐨勫墠鍥涗釜鍏冪礌锛岀浜斾釜鏄粨鏉熸爣蹇楀嵆鈥榎0鈥.
绛旓細= 瀛楃涓 瀛楃涓茶姹傛湁鈥榎0'缁撳熬锛屽瓧绗︽暟缁勬病鏈夛紒char str[]="abcd" ; 杩欑鍒濆鍖,鏄皢涓涓瓧绗︿覆甯搁噺璧嬪肩粰涓涓瓧绗︽暟缁str,鏄渁bcd鈥濆父閲忎腑鍚湁'\0'char b[]={'a','b','c','d','e'} ; 杩欑鍒濆鍖栵紝鏄粰鏁扮粍涓鐨勬瘡涓厓绱犺祴鍊硷紝涓庡瓧绗︿覆鏃犲叧銆傚洜姝わ紝娌℃湁鈥橽0'鐨勬蹇 ...
绛旓細char*aa[2]="abcd"锛"ABCD"锛岄夐」涓娉曟纭殑鏄紙锛堿.aa鏁扮粍鍏冪礌鐨勫煎垎鍒槸"abcd"鍜"ABCD"B.aa鏄寚閽堝彉閲忥紝瀹冩寚鍚戝惈鏈変袱涓暟缁勫厓绱犵殑瀛楃鍨嬩竴缁存暟缁 C.aa鏁扮粍鐨勪袱涓厓绱犲垎鍒瀛樻斁鐨勬槸鍚湁4涓瓧绗鐨勪竴缁瀛楃鏁扮粍鐨勯鍦板潃 D.aa鏁扮粍鐨勪袱涓厓绱犱腑鍚勮嚜瀛樻斁浜嗗瓧绗'a'鍜'A'鐨勫湴鍧 姝ｇ‘绛旀锛欴 ...
