C语言改错题，题目是：输入一串字符，并在字符串中从第m个字符开始截取n个字符 c语言编写一个调用函数实现长度为N的源字符串中从第m字符开始...
c\u8bed\u8a00 \u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5c06\u8be5\u5b57\u7b26\u4e32\u4e2d\u4ece\u7b2cm\u4e2a\u5b57\u7b26\u5f00\u59cb\u7684\u5168\u90e8\u5b57\u7b26\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0cm\u7531\u7528\u6237\u8f93\u5165\u6b63\u786e\u7a0b\u5e8f\u5982\u4e0b\uff1a
#define N 20//\u5b8f\u5b9a\u4e49\uff1a\u5b9a\u4e49\u6570\u7ec4\u957f\u5ea6
#include
using namespace std;
int main()
{
int m, i;//\u5b9a\u4e49\u6307\u5b9a\u590d\u5236\u5143\u7d20\u8d77\u59cb\u5750\u6807\u548c\u5faa\u73af\u53d8\u91cf
char a[N], b[N];//\u5b9a\u4e49\u4e24\u4e2a\u957f\u5ea6\u76f8\u540c\u7684\u6570\u7ec4
cout << "\u8bf7\u8f93\u5165\u5b57\u7b26\u4e32:";
gets_s(a);//\u6309\u7167\u63d0\u793a\uff1a\u5229\u7528\u5b57\u7b26\u8f93\u5165\u51fd\u6570\u8fdb\u884c\u5b57\u7b26\u4e32\u8f93\u5165\u5e76\u5b58\u5230a\u6570\u7ec4\u4e2d
cout << "\u8bf7\u8f93\u5165m:";
cin >> m;//\u6309\u7167\u63d0\u793a\uff1a\u8f93\u5165\u6307\u5b9a\u590d\u5236\u5143\u7d20\u8d77\u59cb\u5750\u6807
for (i = 0; b[i - 1] != '\0'; i++)//\u904d\u5386\u4ece\u6307\u5b9a\u5143\u7d20\u5f00\u59cb\uff0c\u5230\u5b57\u7b26\u4e32\u7ed3\u675f\u505c\u6b62
{
b[i] = a[i + m -1 ];//\u4ecea\u6570\u7ec4\u7b2cm\u4e2a\u5143\u7d20\u5f00\u59cb\u4f9d\u6b21\u590d\u5236\u7ed9b\u6570\u7ec4
}
cout << "\u7b2cm\u4e2a\u540e\u9762\u7684\u5b57\u7b26\u4e32\u4e3a:" << b << endl;//\u8f93\u51fab\u6570\u7ec4\u5185\u5bb9\uff08\u5373\u7ed3\u679c\uff09
return 0;
}
\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\uff1a
\u6269\u5c55\u8d44\u6599\uff1a
//\u6307\u9488\u65b9\u6cd5\u5b8c\u6210\u5b57\u7b26\u4e32\u7684\u590d\u5236
#include
void copy_string(char *from,char *to); //\u51fd\u6570\u58f0\u660e
void main()
{
char *fro,*t;//\u5b9a\u4e49\u4e24\u4e2a\u6307\u9488\u53d8\u91cf
char a[]="I am a teacher.";//\u5b9a\u4e49\u4e24\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4
char b[]="You are a student.";
printf("a=%s\nb=%s\n",a,b);//\u8f93\u51faa\uff0cb\u4e24\u6570\u7ec4\u5185\u5bb9
fro=a;t=b;//\u5c06a\u6570\u7ec4\u521d\u59cb\u5730\u5740\u7ed9fro\uff0cb\u6570\u7ec4\u521d\u59cb\u5730\u5740\u7ed9t
printf("\ncopy string a to string b:\n");
copy_string(fro,t);//\u7528\u51fd\u6570\u8fdb\u884cCOPY\uff08\u6b64\u5904\u4e0d\u7528\u5e26\u6307\u9488\u7b26\u53f7*\uff0c\u5229\u7528\u7684\u5730\u5740\u76f4\u63a5\u4f20\u9001\uff09
printf("string a=%s\nstring b=%s\n",a,b);
}
void copy_string(char* from,char* to)
{
while(*from!='\0')//\u6570\u7ec4\u672a\u7ed3\u675f\u5219\u7ee7\u7eed
{
*to=*from;//\u6570\u7ec4\u5143\u7d20\u590d\u5236
from++;to++;//\u6307\u5411\u4e0b\u4e00\u4e2a\u6570\u7ec4\u5143\u7d20\u5730\u5740
}
*to='\0';//\u5b57\u7b26\u4e32\u7684\u6700\u540e\u4e00\u4e2a\u5b57\u7b26\u4e3a\0
}
#include void shot(char *dst, char *src, int m, int k){int i;int len = 0;for (i=m; i<m+k; i++)dst[len++] = src[i];dst[len] = '\0';}int main(){char src[100];char dst[100];int m = 3;int k = 10;gets(src);shot(dst, src, m, k);printf("%s\n", dst);return 0;}
{ i=0;
/**/ while(i<=n) /**/ i<n//i是整型，i<n说明i最大为n-1，0到n-1,刚好n个数；
{
/**/ sub[i]=str[m+i]; /**/ sub[i]=str[m+i-1];//跟上一个类似，写成str[i+(m-1)]你能明白吧？
i++;
}
/**/ sub[i]='
'; /**/ sub[i]='\0'//因为i++是先用后加1，所以sub[i]代表的是第n+1个元素；之所以赋值'\0',是因为数组sub[]中存放的是字符串，应以'\0'为结束标志。
printf("sub string is:%s
",sub);
}
getch();
}
绛旓細绛锛氭敼閿濡備笅鎵绀猴紝鍦ㄧ▼搴忛敊璇儴鍒嗘湁鎻愮ず銆俰nclude <stdio.h> int main (void){ int a,b,c,max;//绗竴澶勯敊璇紝max瀹氫箟鏈娇鐢紝t鏈畾涔夊嵈浣跨敤浜嗐傛湁涓ょ瑙ｅ喅鍔炴硶锛屽皢涓嬮潰t鍑虹幇鐨勫湴鏂圭敤max浠ｆ浛锛屾垨鑰呴噸鏂板畾涔塼锛屽彇娑堝max鐨勫畾涔夈俻rintf (""璇杈撳叆3涓暣鏁:\n");scanf ("%d%d%d" , &a ,&...
绛旓細3銆佷娇鐢╢or寰幆璇彞鏉ュ10涓暟鍊肩殑寰幆璁＄畻銆傜疮鍔犲湪sum璇彞涓4銆佸惊鐜鍙ヤ腑杩涜10涓暟鐨勭疮鍔犲湪sum閲岄潰锛岀劧鍚庡湪寰幆璇彞澶栦娇鐢紙average=sum/10锛夋潵璁＄畻10涓鐢熺殑骞冲潎鎴愮哗銆5銆佹寜鐓棰樼洰鐨勮姹傜紪鍐欏畬婧愪唬鐮佷箣鍚庯紝鐐瑰嚮鈥滆繍琛屸濄6銆佸脊鍑杈撳叆椤甸潰涔嬪悗锛屽湪杈撳嚭椤甸潰杈撳叆10涓暣鏁板硷紝鐒跺悗鐐瑰嚮鍥炶溅閿紝璁＄畻鏈...
绛旓細include <stdio.h> int main(void){ int flag, n;double eps, item, s;printf("Input eps:");scanf("%lf", &eps);flag = 1;s = 0;n = 1;do { item = 1.0 / n;s = s + flag * item;flag = -flag;n = n + 3;} while (item >= eps);printf("s=%f\n", s);r...
绛旓細define LEN sizeof(NODE); ---銆#define LEN sizeof(NODE)
绛旓細鏀归敊锛骞剁粡瀹為檯杩愯锛岀粨鏋滃涓嬪浘锛氭敼閿鍚庯紝婧愪唬鐮佸涓嬶細include<conio.h>#include<stdio.h>//int found(int a[10][30],int n) //閿欒锛屽脊鍑洪敊璇 [Error] type of formal parameter 1 is incomplete int found(int a[10][30],int n) //鏀归敊 { int i, j, s, k, x;//for(i=0, ...
绛旓細include <stdio.h>struct student{int number;char name[10];float score; //杩欓噷鍑洪敊锛屾病蹇呰浣跨敤鏁扮粍锛屽惁鍒欏悗闈㈢殑璇彞.score涓嶈兘浣跨敤};int main(void){int i,N;float average=0;printf("璇杈撳叆瀛︾敓浜烘暟N:");scanf("%d",&N);struct student students[N];for(i=0;i<N;i++){printf("\n...
绛旓細\n"); scanf("%d", &score); } if (score >= 90) grade = 'A'; else if (score >= 80) grade = 'B'; else if (score >= 70) grade = 'C'; else if (score >= 60) grade = 'D'; else grade = 'E'; printf("grade:%c\n",...
绛旓細include<stdio.h> void main(){char str1[100],str2[100];int i,s;printf("\n input string 1:\n");gets(str1);printf("\n input string 2:\n");gets(str2);i=0;while((str1[i]==str2[i])&&(str1[i]!='\0'))i++;s=str1[i]-str2[i];printf("%d\n",s);} ...
绛旓細, &a, &b);getchar();/*鍘绘帀鏈鍚庣紦鍐插尯涓殑鍥炶溅绗*/printf("璇杈撳叆鍔犮佸噺銆佷箻銆侀櫎鎴栬呮眰浣欑鍙穃n");scanf("%c", &m);if (m == '+')/*姣旇緝鐨勬槸瀛楃涓嶆槸瀛楃涓诧紝鑰屼笖瀛楃涓蹭笉鏄綘閭ｄ箞姣旇緝鐨*/r = a + b;else if (m == '-')r = a - b;else if (m == '*')...
绛旓細//灏哸[0]鎻掑湪b[j]澶 } combn( &a[1], b ); //閫掑綊璋冪敤comb鍑芥暟锛屾彃鍏瀛楃涓茬殑涓嬩竴涓瓧绗 return;}int main( ){ int i,n; char sa[100],sc[1000]={'\0'}; //sa淇濆瓨鏂杈撳叆鐨勫瓧绗︿覆锛宻c淇濆瓨鍚堝苟鍚庣殑瀛楃涓 printf("Number of strings n:"); sca...
