char str1[20] = "Something";
char *str2 = "Random";
strcat(str1, str2[1]);
It gives the error pointer from integer without a cast why is str2[1] treated as an integer? so what should I do if I want to strcat individual elements in a string Thanks!
Because an element from a char array is a char, which is an integral type. If you want a pointer to the second element, try str2 + 1 or &str2[1].
With str2[1] the 2nd character is meant (starting at index 0), which is the 'a' in 'Random'.
If you want the complete string you need to write str2 instead of str2[1].
str2[1] is of type char while in the strcat(), a char * is expected. Here you should have used str2 + 1.
str2[1] is a char which is promoted to an int according to C type promotion rules. If you want to append a single character to a string, try the following:
int len = strlen(str1);
str1[len] = str2[1];
str1[len + 1] = '\0';
In other words, strlen only concatenates two strings, not a string and a character.
