Column Name From a Given String

Problem From The Easy Section.

Author: spdpiyush

GEEKSFORGEEKS/Geeks_Column_Name_Given_String.c

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+//GeeksForGeeks Problem : Column name from  a given column number(Easy)
+//Author : Piyush
+#include<stdio.h>
+int main()
+{
+    int t,no,l,i,p;
+	char str[20],str1[]={'Z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y'};
+	scanf("%d",&t);
+	while(t--)
+	{
+		l=0;
+		i=0;
+		scanf("%d",&no);
+		while(no)
+		{
+			p=no%26;
+			str[i]=str1[p];
+			no/=26;
+			l++;
+			i++;
+		}
+		str[l]='\0';
+		i=0;
+		for(i=l-1;i>=0;i--)
+		{
+			printf("%c",str[i]);
+		}
+		printf("\n");
+	}
+	return 0;
+}