原文: https://beginnersbook.com/2015/02/c-program-to-concatenate-two-strings-without-using-strcat/
在下面的程序中,将要求用户输入两个字符串,然后程序将它们连接起来。对于连接,我们没有使用标准库函数strcat(),而是编写了一个逻辑来在第一个字符串的末尾附加第二个字符串。
用于字符串连接的 C 程序
/* C program to concatenate two strings without* using standard library function strcat()*/#include <stdio.h>int main(){char str1[50], str2[50], i, j;printf("\nEnter first string: ");scanf("%s",str1);printf("\nEnter second string: ");scanf("%s",str2);/* This loop is to store the length of str1 in i* It just counts the number of characters in str1* You can also use strlen instead of this.*/for(i=0; str1[i]!='\0'; ++i);/* This loop would concatenate the string str2 at* the end of str1*/for(j=0; str2[j]!='\0'; ++j, ++i){str1[i]=str2[j];}// \0 represents end of stringstr1[i]='\0';printf("\n输出: %s",str1);return 0;}
输出:

正如您所看到的,我们已经输入了两个字符串,并且在程序的输出中两个字符串都被连接起来。
