Add files via upload

Author: HypertextAssassin0273

Miscellaneous/atoif_func.cpp

@@ -0,0 +1,45 @@
+#include<iostream>
+#include<iomanip>
+using namespace std;
+
+template<unsigned long long n>
+long double atoif(const char (&num)[n],bool space_flag=false){//i.e. converts string to float
+if (n==-1||!n)
+return 0;
+ short sign=1,i=0; int integer_part=0; bool fraction_flag=false;
+if (num[i]=='-'){// Take care of +/- sign
+++i;
+sign=-1;
+}
+else if(num[i]=='+')
+++i;
+while(i<n-1){
+if(space_flag&&num[i]==' ')
+break;
+if (num[i]>='0'&&num[i]<='9')
+integer_part=integer_part*10+(num[i]-'0');
+else if(num[i]=='.'){
+fraction_flag=true;
+i++;
+break;
+}
+++i;
+}
+long double fraction_part=0;
+if (fraction_flag){
+long double exponent=0.1;
+ while (i<n-1){
+if (num[i]<'0'||num[i]>'9')
+break;
+fraction_part+=exponent*(num[i]-'0');
+exponent*=0.1;
+++i;
+}
+}
+return sign*integer_part+fraction_part;
+}
+
+int main(){
+cout<<setprecision(12)<<atoif("51224.765432");
+return 0;
+}