View Code of Problem 43

#include<stdio.h>
int main()
{
	int i,n,k;
	char a[90];
	scanf("%s",a);
	for(i=0;a[i]!='\0';i++)
	{
	    n=a[i]-'A';
		if(n<0||n>57||n>25&&n<32){
		   for(k=i;a[k]!='\0';k++){
		   a[k]=a[k+1];
		   }
		   i--;
		     
	    }
	}
	printf("%s",a);
}

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