合并两个字符串

#include<stdio.h>#include <string.h>#include <assert.h>char * my_strcat(char *dest, char const *src){char *ret = dest;assert((dest != NULL) && (src != NULL));while(*dest != '\0'){dest++;}while(*src != '\0'){*dest = *src;dest++;src++;}return ret;}int main(){char dest[10]="njail";char *src="biis";char *str=my_strcat(dest,src);printf("%s\n",str);return 0;}