#include "Stdio.h" #include "Conio.h" main() { int n,i,j,k; char s1[20],s2[20],s3[40]; printf("main sting:"); gets(s1); printf("sub sting:"); gets(s2); printf("start index:"); scanf("%d",&n); for(i=0;i<n;i++); s3[i]=s1[i]; for (j=0;s2[j]!='\0';j++) s3[j+i]=s1[j]; for(k=n;s1[k]!='\0' ;k++) s3[j+k]=s1[k]; s3[j+k]='\0' ; printf("insertg:%s\n",s3); getch(); } 输入I student和 am a 与 1 预想结果: I am a student 但屏幕上却什么都没显示, 请帮忙检查一下,看看程序到底在哪出错?

[此贴子已经被作者于2005-3-27 16:45:57编辑过]

#include "Stdio.h" #include "Conio.h" main() { int n,i,j,k; char s1[20],s2[20],s3[40]; printf("main sting:"); gets(s1); printf("sub sting:"); gets(s2); printf("start index:"); scanf("%d",&n); for(i=0;i<n;i++); s3[i]=s1[i]; for (j=0;s2[j]!='\0';j++) s3[j+i]=s1[j]; /*此处赋值应该是s3[j+i]=s2[j];*/ for(k=n;s1[k]!='\0' ;k++) s3[j+k]=s1[k]; s3[j+k]='\0' ; printf("insertg:%s\n",s3); getch(); }

#include "Stdio.h" #include "Conio.h" main() { int n,i,j,k; char s1[20],s2[20],s3[40]; printf("main sting:"); gets(s1); printf("sub sting:"); gets(s2); printf("start index:"); scanf("%d",&n); for(i=0;i<n;i++); /*这个地方，for后面不应该有这个分号的！*/ s3[i]=s1[i]; for (j=0;s2[j]!='\0';j++) s3[j+i]=s1[j]; /*此处赋值应该是s3[j+i]=s2[j];*/ for(k=n;s1[k]!='\0' ;k++) s3[j+k]=s1[k]; s3[j+k]='\0' ; printf("insertg:%s\n",s3); getch(); } ok了！

谢谢