用c语言编写一个将两个字符串连接起来函数两个字符串由主函数输入, 连 ...答:void main(){ void con(char sting1[],char sting2[],char sting3[]);char s1[20],s2[20],s3[40];printf("Input sting1: ");scanf("%s",s1);printf("Input sting2: ");scanf("%s",s2);con(s1,s2,s3);printf("%s\n",s3);} void con(char sting1[],char sting2[],char ...