从键盘上任意输入5个字符，用原来字母后面第4个字母代替原来的字母。要考虑如超过“Z”和"z"，则环绕至“A”和“a"后。#includeint main(){char c1,c2,c3,c4,c5;scanf("%c%c%c%c%c",&c1,&c2,&c3,&c4,&c5);if((c1+4>'z')||((c1+4>'Z')&&(c1'z')||((c2+4>'Z')&&(c2'z')||((c3+4>'Z')&&(c3void main(){char c1,c2,c3,c4,c5;c1='C';c2='h';c3='i';c4='n';c5='a';c1+=4;c2+=4;c3+=4;c4+=4;c5+=4;printf("%c%c%c%c%c",c1,c2,c3,c4,c5);...
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