C语言：从键盘输入两个字符串，比较它们的大小？ C语言编程，输入两个字符串，比较他们的大小并输出比较结果
C\u8bed\u8a00\uff1a\u4ece\u952e\u76d8\u8f93\u5165\u4e24\u4e2a\u5b57\u7b26\u4e32\uff0c\u6bd4\u8f83\u5b83\u4eec\u7684\u5927\u5c0f\uff1f//\u770b\u6e05\u695a\uff0c\u8fd9\u4e2astrcmp\u662f\u6211\u7f16\u7684\u554a\uff01\u4e0d\u559c\u6b22\u8fd9\u4e2a\u540d\u5b50\uff0c\u4f60\u53ef\u4ee5\u6362\u3002
#include
int
strcmp(char
*t,char
*s)
{
int
i=0;
while(t[i]==s[i]&&s[i]&&t[i])
i++;
if(s[i]=='\0'&&t[i]=='\0')
return
0;//\u8868\u793a\u76f8\u7b49\u3002
else
if(t[i]>s[i])
return
1;//\u8868\u793a\u7b2c\u4e00\u4e2a\u5927\u4e8e\u7b2c\u4e8c\u4e2a\u3002
else
return
-1;//\u8868\u793a\u7b2c\u4e00\u4e2a\u5c0f\u4e8e\u7b2c\u4e8c\u4e2a\u3002
}
int
main()
{
char
s1[81],s2[81];
gets(s1);
gets(s2);
printf("%d\n",strcmp(s1,s2));
return
0;
}
\u5982\u679c\u53ea\u662f\u95ee\u4e2a\u7b97\u6cd5\uff0c\u6211\u53ef\u4ee5\u544a\u8bc9\u4f60\uff0c\u4f46\u662f\u5982\u679c\u662f\u4f60\u8981\u5168\u90e8
\uff0c\u90a3\u5c31\u4e0d\u53ef\u4ee5\u4e86\uff0c\u4f5c\u4e1a\u8981\u81ea\u5df1\u505a\u7684\u554a\uff01
\u5982\u679c\u4f60\u8981\u7528\u6237\u8f93\u51652\u4e2a\u5b57\u7b26\u4e32\u4f5c\u6bd4\u8f83\u7684\u8bdd
\u53ef\u4ee5\u7528\u201c
\u201d\u6765\u533a\u5206\u5b57\u7b26\u4e321\u4e0e\u5b57\u7b26\u4e322
\u7136\u540e\u628a2\u4e2a\u5b57\u7b26\u4e32\u5b58\u52302\u4e2a\u6570\u7ec4\u91cc\u53bb\u6bd4
int
i=1,j=1;
char
a[20],b[20]
if
(c=getchar()!="
")
then
{
a[i]=c;
i++;
}
else
{
b[j]=c;
j++;
}
\u7136\u540e\u7528for\u5faa\u73af\u4e00\u4e2a\u4e00\u4e2a\u6bd4\u4ed6\u4eec\u7684\u5927\u5c0f\u5c31\u53ef\u4ee5\u4e86\uff0c\u5982\u679c\u6709\u4e00\u4e2a\u5927\u4e86\u5c31return
\u5927\u7684\u503c\uff0c\u5982\u679c\u9047\u5230\u4e00\u4e2a\u6570\u7ec4\u4e3a\u7a7a\u4e86\uff0c\u4e5freturn
\u53e6\u5916\u4e00\u4e2a\u5b57\u7b26\u4e32\u5c31\u597d\u4e86\u3002
\u5176\u5b83\u7684\u8981\u4f60\u81ea\u5df1\u60f3\u4e86\uff0c\u5982\u679c\u5168\u544a\u4f60\uff0c\u90a3\u4f60\u4e5f\u8fd8\u662f\u4ec0\u4e48\u4e5f\u5b66\u4e0d\u4f1a\uff0c\u7b97\u6cd5\u544a\u4f60\u4e86\u5c31\u53ef\u4ee5\u4e86\u3002\u7ed9\u4e0d\u7ed9\u5206\u4f60\u81ea\u5df1\u770b\u7740\u529e\u5427
#include<stdio.h>
int strcmp(char *t,char *s)
{
int i=0;
while(t[i]==s[i]&&s[i]&&t[i]) i++;
if(s[i]=='\0'&&t[i]=='\0')
return 0;//表示相等。
else if(t[i]>s[i]) return 1;//表示第一个大于第二个。
else return -1;//表示第一个小于第二个。
}
int main()
{
char s1[81],s2[81];
gets(s1);
gets(s2);
printf("%d\n",strcmp(s1,s2));
return 0;
}
#include<stdio.h>
int main()
{
char Ipt;
char Opt;
printf("Input word\t");
scanf_s("%c",&Ipt);
//Opt = Ipt + 32;//大写变小写
//printf("Exchange is\t%c\n", Opt);
char str = 'a';
//ASCLL码 A~Z[65,90] a~z[97~122]
if (Ipt < str)
{
Opt = Ipt + 32;//大写变小写
printf("Exchange is\t%c\n", Opt);
}
else
{
Opt = Ipt - 32;//小写变大写
printf("Exchange is\t%c\n", Opt);
}
printf("%d\t%d\n", Opt, Ipt);
return 10086;
绛旓細cin >> pszStringA; // 杈撳叆瀛楃涓 A cin >> pszStringB; // 杈撳叆瀛楃涓 A int nStringBLength = strlen( pszStringB ); // 姹傚緱瀛楃涓 B 鐨勯暱搴 int i = 0;// 閬嶅巻瀛楃涓 B 閲岄潰鐨勬瘡涓涓瓧绗 for( i = 0; i < nStringBLength; i++ ){ // 杩欓噷涓嶇敤瑙ｉ噴浜嗗惂 ...
绛旓細include <stdio.h>int main(){ char str1[100],str2[100]; char *p,*p1,*p2; gets(str1); gets(str2); for(p=str1;*p!='\0';p++) { for(p1=p;p2=str2;*p1==*p2;p1++,p2++); if(*p2=='\0') { printf("%d",p-str1); return 0...
绛旓細void main(){ char str1[N],str2[N];int i=0,j=0;gets(str1); //鑾峰彇瀛楃涓诧紝鍥炶溅缁撴潫 gets(str2);while(str1[i]!='\0')//璁＄畻str1鏁扮粍闀垮害 i++;while(str2[j]!='\0')//鎶妔tr2杩炴帴鍒皊tr1灏惧反 { str1[i++]=str2[j];j++;} for(int n=0;n...
绛旓細; //杈撳叆涓2; char *newstr = (char*)calloc(strlen(string1) + strlen(string2) + 1, sizeof(char)); //鍒涘缓涓涓垰濂藉绾涓や釜涓茬殑鏂颁覆; if(!newstr) //妫鏌ユ槸鍚﹀垱寤烘垚鍔; { printf("鍐呭瓨涓嶈冻,绋嬪簭缁撴潫!\n"); exit(1);...
绛旓細鎬濊矾锛氫袱涓瓧绗︿覆鐨勬嫾鎺ュ彲浠ヤ娇鐢╯trcat鍑芥暟銆俿trcat鍑芥暟鍘熷瀷锛 char *strcat(char *s1,char *s2);闇瑕佸紩鍏ュご鏂囦欢锛#include <string.h> 鍔熻兘锛氭妸s2鎵鎸囧瓧绗︿覆娣诲姞鍒皊1缁撳熬澶勫苟娣诲姞'\0'銆傛敞鎰忥細s1蹇呴』鏈夎冻澶熺殑绌洪棿鏉ュ绾硈1鍜宻2鐨勫瓧绗︿覆銆傚弬鑰冧唬鐮侊細include "stdio.h" #include "string.h" int ...
绛旓細printf("璇杈撳叆绗簩涓瓧绗︿覆锛\n");gets(s2);printf("璇疯緭鍏ユ彃鍏ヤ綅缃,娉ㄦ剰涓嶈澶т簬%d锛歕n",strlen(s1));scanf("%d",&n);for(i=0;i<(int)strlen(s1);i++)s[i]=s1[i];for(i=0;i<(int)strlen(s2);i++){ s[n+strlen(s2)+i]=s1[n+i];s[n+i]=s2[i];} puts(s);}...
绛旓細include<stdio.h> include<string.h> main(){ char s1[256],s2[256];char *ptr;char *ptr1;scanf("%s",s1);scanf("%s",s2);ptr1=s1;ptr=strstr(s1,s2);if(ptr)printf("YES\N");}
绛旓細return 0;}int main(){ int i, len, j=0; char s1[100], s2[100], s3[100];/*淇濆瓨涓や釜瀛楃涓插拰浜ら泦涓*/ char* s[2]={s1,s2};/*鐢ㄤ竴涓暟缁剆鏉ョ鐞唖1鍜宻2浠ヤ究鍦ㄤ笅闈㈢敤for寰幆澶勭悊*/ for(i=0; i<2; i++){/*渚濇杈撳叆涓や釜瀛楃涓*///杩欓噷浣跨敤do,while寰幆锛
绛旓細鎵浠ュ綋閬囧埌杩斿洖鍊间负NULL鐨勬儏鍐垫椂锛屽簲浣跨敤ferror鎴杅eof鍑芥暟妫鏌ユ槸鍙戠敓閿欒杩樻槸閬囧埌EOF銆2銆佷緥绋嬶細include <stdio.h>int main(){ char buffer[5];//瀹氫箟缂撳瓨瀛楃鏁扮粍buffer gets(buffer);//鐢╣ets鍑芥暟浠巗tdin娴佷腑璇诲叆瀛楃涓诧紝鍥犱负buffer闀垮害鏄5锛杈撳叆涓嶈兘瓒呰繃4涓瓧绗 printf("%s",buffer);//...
绛旓細include"stdio.h"include"string.h"void main(){ char a[100],b[100];int i,n,m,k;printf("璇杈撳叆绗竴涓瓧绗︿覆(a):");gets(a);n=strlen(a);printf("鍦ㄨ緭鍏ヨ鎻掑叆鐨勫瓧绗︿覆(b):");gets(b);m=strlen(b);printf("璇疯緭鍏ヨ鎻掑叆鐨勪綅缃(k涓嶈兘瓒呭嚭瀛楃涓瞐鐨勯暱搴)锛");scanf("%d",...
