Answer Posted / piyush sharma

float stringToFloat(char *str)
{
char ch;
int decimal_pt = 0;
int dec_count = 0;
float val = 0.0;

for( int i=0; str[i]!='\0'; i++ )
{
ch = str[i];
if( ch == '.' )
{
decimal_pt = 1;
continue;
}

if( !(ch>=48 && ch<=57) )
break;

val = val*10 + ch-48;
if( decimal_pt == 1 )
dec_count++;
}

for( int i=0; i<dec_count; i++ )
val = val/10;

return val;
}

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