Gets

gets is a function in the C standard library, declared in the header file stdio.h, that reads a line from the standard input and stores it in a buffer provided by the caller.

Implementation

It might be implemented as follows (using getchar): char *gets(char *s){ int i, k = getchar();

/* Return NULL if no input is available */ if (k = EOF) return NULL;

/* Read and store characters until reaching a newline or end-of-file */ for (i = 0; k != EOF && k != ' '; ++i) { s [i] = k; k = getchar();

/* If a read error occurs, the resulting buffer is not usable. */ if (k = EOF && !feof(stdin)) return NULL; }

/* Null-terminate and return the buffer on success. The newline is not stored in the buffer. */ s [i] = '