In C, a string is a zero-terminated array of char: the final element has value 0 and is not visible text. A string literal can initialize an array, but arrays cannot be assigned. A char array without a terminating 0 is not a string. The string.h library distinguishes array functions beginning with mem from string functions beginning with str. section 6.1.5
char jay0[] = "jay";
char jay1[] = { "jay" };
char jay2[] = { 'j', 'a', 'y', 0, };
char jay3[4] = { 'j', 'a', 'y', };
!@%STYLE%@!
{"css":"{\"css\": \"font-weight: bold;\"}","target":"[[{\"line\":0,\"ch\":3},{\"line\":0,\"ch\":7}],[{\"line\":1,\"ch\":3},{\"line\":1,\"ch\":7}],[{\"line\":2,\"ch\":3},{\"line\":2,\"ch\":7}],[{\"line\":3,\"ch\":3},{\"line\":3,\"ch\":7}],[{\"line\":0,\"ch\":3},{\"line\":0,\"ch\":7}],[{\"line\":1,\"ch\":3},{\"line\":1,\"ch\":7}],[{\"line\":2,\"ch\":3},{\"line\":2,\"ch\":7}],[{\"line\":3,\"ch\":3},{\"line\":3,\"ch\":7}],[{\"line\":0,\"ch\":3},{\"line\":0,\"ch\":7}],[{\"line\":1,\"ch\":3},{\"line\":1,\"ch\":7}],[{\"line\":2,\"ch\":3},{\"line\":2,\"ch\":7}],[{\"line\":3,\"ch\":3},{\"line\":3,\"ch\":7}],[{\"line\":0,\"ch\":3},{\"line\":0,\"ch\":7}],[{\"line\":1,\"ch\":3},{\"line\":1,\"ch\":7}],[{\"line\":2,\"ch\":3},{\"line\":2,\"ch\":7}],[{\"line\":3,\"ch\":3},{\"line\":3,\"ch\":7}]]"}
!@%STYLE%@!
Compare several array initializations of the string literal "jay"; each includes room for its terminating 0. section 6.1.5
char jay4[3] = { 'j', 'a', 'y', };
char jay5[3] = "jay";
!@%STYLE%@!
{"css":"{\"css\": \"font-weight: bold;\"}","target":"[[{\"line\":0,\"ch\":0},{\"line\":0,\"ch\":4}],[{\"line\":1,\"ch\":0},{\"line\":1,\"ch\":4}],[{\"line\":0,\"ch\":0},{\"line\":0,\"ch\":4}],[{\"line\":1,\"ch\":0},{\"line\":1,\"ch\":4}]]"}
!@%STYLE%@!
These three-element arrays hold the visible letters but lack the terminating 0, so they are not strings. section 6.1.5
