#include <stdio.h> int main(){ char *arr; int i, j; scanf("%s",&str); for(i=0;arr[i]!='\0';i++){ if(('a'<=arr[i]&&arr[i]<='z')||('A'<=arr[i]&&arr[i]<='Z')){ printf("%c",arr[i]); } } } /* Main.c: In function 'main': Main.c:6:15: error: 'str' undeclared (first use in this function) scanf("%s",&str); ^ Main.c:6:15: note: each undeclared identifier is reported only once for each function it appears in Main.c:5:10: warning: unused variable 'j' [-Wunused-variable] int i, j; ^ */ |
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