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Lab9/12345.c

+/*
+ * 12345.c
+ * 
+ * Copyright 2018 Viktor <Viktor@DESKTOP-EJAITOO>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ * 
+ * 
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+int isInt(char* x,int y);
+int moreInt(char* x,int y, int i);
+int DeciConv(char x, int y) ;
+
+int main()
+{
+	int val,base;
+	char line[100];
+	printf("write the base, positive integer which is less or equal to 36\n");
+	scanf("%d", &base);
+	do{
+	printf("write the val for the input\n");
+	scanf("%s", line);
+	val = isInt(line,base);
+	
+	if (val){
+			printf("please repeat\n");
+	}
+	}while(val);
+	
+	
+	
+	printf("Decimal equivalent of %s in base %d is  %d\n", x, y, DeciConv(x, y)); 
+	printf("%s",line);
+	return 0;
+}
+
+int isInt(char* x,int y){
+	int i,bool,length;
+	i=0;
+	bool=0;
+	length = strlen(x);
+	while(i < length){
+		bool=0;
+		
+		if (y<11){
+			if ((x[i] < 47)||(x[i] > 47+y)){
+			    printf("%c", x[i]);
+		        printf("   %d\n", bool);
+			bool=1;
+			break;
+			}
+		}else{
+		bool = moreInt(x,y,i);
+		if(bool==1){
+		    printf("%c", x[i]);
+		    printf("   %d\n", bool);
+			break;
+			}
+	}
+		printf("%c", x[i]);
+		printf("   %d\n", bool);
+		i++;
+		}
+	return(bool);
+	
+	}
+ int moreInt(char* x,int y, int i){
+	int bool;
+	
+	while(1){
+	       // printf("the value of the %c is %d\n",x[i],x[i]);
+			if ((x[i] > 47)&&(x[i] < 58)){
+			bool=0;
+			//printf("1\n");
+			break;
+			}
+			if ((x[i] > 64)&&(x[i] < 55+y)){
+			bool=0;
+			//printf("2\n");
+			break;
+			
+			}else{
+			  //  printf("3\n");
+    			bool = 1;
+    			
+    			break;
+			}
+	}
+	 
+	 return(bool);
+}
+
+
+int DeciConv(char x, int y) 
+{ 
+    int len = strlen(x); 
+    int power = 1;
+    int num = 0;  
+    int i; 
+  
+    
+    for (i = len - 1; i >= 0; i--) 
+    { 
+        
+        if (val(x[i]) >= y) 
+        { 
+           printf("Invalid Number"); 
+           return -1; 
+        } 
+  
+        num += val(x[i]) * power; 
+        power = power * base; 
+    } 
+  
+    return num; 
+} 
+
+int val(char c) 
+{ 
+	if (c >= '0' && c <= '9'){
+		return (int)c - '0'; 
+	}
+	else{
+		return (int)c - 'A' + 10; 
+	}