Upload New File

lab9/task3.c

+#include <stdio.h>
+#include <string.h>
+int ident(char str[5]);
+int convertToInteger(char str[5]);
+	
+int main(){
+	
+	char input[5];
+	int count = 0;
+	do{
+		if(count > 0){
+			printf("This is not a number!\n");
+		}
+		puts("Enter a 5 digit number: ");
+		scanf("%s", input); 
+		printf("String: %s", input); 
+		printf("\n");
+		count ++;
+	}while(ident(input) != 5);	
+	
+	
+	printf("Integer: %d\n", convertToInteger(input));
+	return 0;
+}	
+
+int ident(char str[5]){
+	int flag;
+	int result = 0;
+	for(int i = 0; i < 5; i++){
+		flag = 0;
+		for(int j = 48; j <= 57; j++){
+			if(str[i] == j){ 
+				flag = 1; 
+				break;
+			}
+		}
+		result = result + flag;
+	}
+	
+	return result;
+}	
+
+int convertToInteger(char str[5]){
+	int  i, len;
+	int result=0;
+	len = 5;
+	for(i=0; i<len; i++){
+		result = result * 10 + ( str[i] - '0' );
+	}
+	
+	return result;
+}