#include <stdio.h> #include <string.h> #define STR_LENGTH 40 void main() { char str1[STR_LENGTH] = "String in C"; char str2[STR_LENGTH] = ",String in C"; if(STR_LENGTH > strlen(str1) + strlen(str2)) /* Enough space ? */ printf("\n%s\n", strcat(str1, str2) ); /* yes, so print joined string */ else printf("\n no enough room."); }