不是题解!!!

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#include<iostream>
#include<cstring>
char strA[128],strB[128],strC[128],str[255];int len,l,strlen_;int main(void){std::cin>>strA;std::cin>>strB;std::cin>>strC;len = strlen(strA),l = strlen(strB);for(int i = 0;i < len;i++){str[i] = strA[i];}for(int i = 0;i < l;i++){str[i+len] = strB[i];}strlen_ = strlen(str);for(int i = 0;i < strlen_;i++){if(str[i]==strC[0]){for(int j = 1;j < strlen_;j++){if(str[j+i]!=strC[j]&&strC[j]!='\0'){goto next;}}std::cout<<strC<<" is substring of "<<strA<<" and "<<strB;return 0;next: continue;}}std::cout<<strC<<" is not substring of "<<strA<<" and "<<strB;return 0;}

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