1.#include <stdio.h>
int main(){ char c = " "; while( c=="\t" || c==" " || c=="\n" ) { scanf("%c", &c); } return 0;}2.#include <stdio.h>
int main(){ char* p1 = 1 ; char* p2 = '1'; char* p3 = "1"; printf("%s, %s, %s", p1, p2, p3); printf('\n'); printf("\n"); return 0;}