c语言中将小写字母a和b转换为大写a和b C语言编程 将大写字母A、B变成小写字母？
C\u8bed\u8a00\u7f16\u7a0b \u5c06\u5927\u5199\u5b57\u6bcdA\u3001B\u53d8\u6210\u5c0f\u5199\u5b57\u6bcd\u5f88\u7b80\u5355\u5728\u4f60\u8f93\u5165\u7684\u53d8\u91cf\u4e0a\u52a032\u5c31\u662f\u5c0f\u5199\u4e86..
#include"stdio.h"
char ch;
void main()
{
scanf("%c",&ch);
printf("%c",ch+32);
}
char X,Y\uff1b
X = \u2018A\u2019\uff1b
Y = \u2018B\u2019\uff1b
X += 30;
Y += 30;
printf("X = %c,Y = %c",X,Y);
#include <stdio.h>
#include <string.h>
int main()
{
char x = 'a';
char y = toupper(x);
printf("%c -> %c
", x, y);
return 0;
}
绛旓細include <stdio.h>#include <string.h>int main(){ char x = 'a'; char y = toupper(x); printf("%c -> %c\n", x, y); return 0;}
绛旓細鐢变簬澶у啓瀛楁瘝涓庡皬鍐欏瓧姣嶄箣闂寸殑宸间负 32锛鍥犳灏忓啓瀛楁瘝杞崲涓哄ぇ鍐欏瓧姣嶇殑鏂规硶灏辨槸灏嗗皬鍐欏瓧姣嶇殑 ASCII 鐮佸煎噺鍘 32锛屼究鍙緱鍒颁笌涔嬪搴旂殑澶у啓瀛楁瘝銆傚埄鐢 getchar 鍑芥暟浠庨敭鐩樹笂杈撳叆涓涓皬鍐欏瓧姣嶏紝骞跺皢鍏惰祴缁欎竴涓瓧绗﹀彉閲 a锛涚劧鍚庡皢 a鈥32 鐨勫艰祴缁欏瓧绗﹀彉閲 b锛涙渶鍚庤繘琛岃緭鍑猴紝杈撳嚭鏃跺厛杈撳嚭瀛楁瘝锛屽啀灏嗗瓧姣...
绛旓細scanf("%c",&s[i]);if (s[i]>'z'||s[i]<'a'){ printf("浣犺緭鍏ョ殑鏈夐潪灏忓啓瀛楃锛岀▼搴忓皢涓嶅仛澶勭悊锛");} else { s[i]-=32;} } for (int j=0;j<3;j++){ printf("%c",s[j]);} printf("\n");return 0;}
绛旓細define XIAOXIE(x) (x>='a' && x<='z') //鍒ゆ柇鏄皬鍐欏瓧绗︺俤efine ZHUANXIAOXIE(x) (x-'A'+'a')//杞负灏忓啓 define ZHUANDAXIE(X) (x-'a'+'A')//杞负澶у啓 int main(){ char str[100];int i;gets(str);for(i = 0; str[i]; i ++)if(DAXIE(str[i])) str[i] = ...
绛旓細绋嬪簭鐨勭7鍜岀8琛屾槸鎶婂皢涓や釜灏忓啓瀛楁瘝a鍜宐杞崲鎴澶у啓瀛楁瘝a鍜宐銆傗榓鈥欑殑ascii鐮佷负97锛岃屸楢鈥欎负65锛屸榖鈥欎负98锛屸楤鈥欎负66銆備粠ascii浠ｇ爜琛ㄤ腑鍙互鐪嬪埌姣忎竴涓皬鍐欏瓧姣嶆瘮瀹冪浉搴旂殑澶у啓瀛楁瘝鐨刟scii鐮佸ぇ32銆c璇█鍏佽瀛楃鏁版嵁涓庢暣鏁扮洿鎺ヨ繘琛岀畻鏈繍绠楋紝鍗斥榓鈥+32浼氬緱鍒版暣鏁97锛屸榓鈥-32浼氬緱鍒版暣鏁65銆
绛旓細'b'鐨凙SCII鐮佸间负98, 'B'鐨凙SCII鐮佸间负66,98-66=32.灏忓啓瀛楁瘝鐨凙SCII鐮佸奸兘澶т簬澶у啓瀛楁瘝鐨凙SCII鐮佸.鎵浠,灏忓啓瀛楁瘝杞崲鎴澶у啓瀛楁瘝鍙鍑忓幓涓涓皬鍐欑殑'a',鍐嶅姞涓婁竴涓ぇ鍐欑殑'A'灏卞彲浠ヤ簡.姣斿:灏忓啓鐨'b'杞崲鎴愬ぇ鍐欑殑'B':'b'-'a'+'A',鐩稿綋浜98-97+65=66,鍗冲ぇ鍐'B'鐨凙SCII鐮佸....
绛旓細灏忓啓鐨瀛楁瘝ASCII鐮佷负 97锛'a'锛夊埌 122锛'z'锛夛紝杞崲鎴澶у啓瀛楁瘝鍒橝SCII鍑32锛屽彉鎴愪粠65锛'A'锛夊埌90('Z')姣忎釜瀛楁瘝瀵瑰簲涓涓猘scii鐮侊紝鏌scii鐮佽〃灏卞彲浠ヤ竴鐩簡鐒躲傝緭鍏ュ瓧姣嶏紝杞崲涓int绫诲瀷锛岀湅鍏跺兼槸鍦ㄤ粈涔堣寖鍥达紝灏卞彲浠ョ煡閬撹緭鍏ョ殑鏄ぇ鍐欒繕鏄皬鍐欍侫SCII鐮侊細缇庡浗(鍥藉)淇℃伅浜ゆ崲鏍囧噯(浠)鐮侊紝涓绉嶄娇鐢7...
绛旓細C璇█涓锛屽瓧绗︾殑瀛樺偍閮芥槸浣跨敤ascii鍊兼潵瀛樺偍鐨勩傛牴鎹瓵SCII鐮佽〃锛屾垜浠彲浠ョ湅鍑猴細澶с佸皬鍐欏瓧姣嶉兘鏄寜椤哄簭杩涜瀛樺偍鐨勶紝澶у啓瀛楁瘝鐨凙SCII鍊煎尯闂翠负锛65~90锛屽搴旂殑瀛楁瘝涓猴細'A'-'Z'锛涘皬鍐欏瓧姣嶇殑ASCII鍊煎尯闂翠负锛97~122锛屽搴旂殑瀛楁瘝涓猴細'a'-'z'锛屽洜姝わ紝灏嗗皬鍐欏瓧姣嶈浆鍖栦负澶у啓瀛楁瘝锛屽彲浠ョ洿鎺ュ皢璇ュ彉閲忓噺32鍗冲彲...
绛旓細浣犵殑杈撳叆瑕佹寜鐓ф牸寮忔潵锛屾棦鐒 scanf("%c%c%c%c%c\n",&ch1,&ch2,&ch3,&ch4,&ch5);鏄互%c%c%c%c%c鐨勫舰寮忥紝浣犵殑杈撳叆灏变笉瑕佺┖鏍硷紝鍚﹀垯浣犲彲浠ヨ繖鏍穝canf("%c锛%c锛%c锛%c锛%c\n",&ch1,&ch2,&ch3,&ch4,&ch5);銆傝緭鍏ユ牸寮忎负a,b,c,d,e娉ㄦ剰閫楀彿銆
绛旓細char a,b;a='A';b='A'+32;b鐨勫肩幇鍦ㄥ氨涓篴 瀛楃涓蹭篃鏄竴鏍 char str[10]={'A','A','B'鈥;int i=0;for(;i<10;i++)str[i]=str[i]+32;printf("%s",str);
