LinkBack URL
About LinkBacks
hi..i am trying to do a currency converter in C..
but there are errors that i can't figure out....
and it don't accept negative numbers and characters...but mistake here..can anyone help?
is there any simplified version or other C examples of a converter please...Code:#include<stdio.h> /* Conversion rates */ float rate_peso = 0.787746; float rate_franc = 1.23073; float rate_euro = 0.781138; float rate_kroner = 6.77551; float rate_rand = 6.62313; /*List functions*/ void welcome(); void result1(float num_usd); void goodbye(); float pesoToUSD(float rate_peso); float inputamount(); main() { /* Define variables */ float peso; float num_usd; /* Program execution */ welcome(); peso = inputamount(); num_usd = pesoToUSD(peso); result1(num_usd); goodbye(); return 0; } void welcome() { printf("\nCurrency Conversion\n"); } /*Prompts for the number of Pesos to convert*/ float inputamount() { /* local variables */ float temp = 1.0; //Holds the return value char Ch; //input and error checking variable char *input; //Holds input string for conversion int isGood = 0; //Boolean 0 is 'false', 1 is 'true' int x = 0; //for loop counter int dec_count = 0; //counts number of decimals /*The do-while loop*/ do { /* Input*/ printf("\nEnter a positive number of Pesos to convert to USD.\n"); gets (input); for(x=0; x < strlen(input); x++) { //Check each character in input string. //ASCII values 48-57 are the digits. (Win32) if (((input[x] >= 48 && input[x] <= 57) || (input[x] == '.' && dec_count == 0))) { isGood = 1; //indicates that input is valid } else { printf("\a"); //audible error signal isGood = 0; //Repeat the do-while break; //breaks the for loop } if (input[x] == '.') dec_count++; } }while(isGood == 0); sscanf(input, "%f", &temp); //reads the input string into a float return temp; } float pesoToUSD(float peso) { float temp; temp = peso/rate_peso; //printf("\npeso=%f rate=%f temp=%f\n", peso, rate_peso, temp); return temp; } /*output*/ void result1(float num_usd) { printf("\n\nThe amount of Pesos you entered is equal to $%.2f USD.\n", num_usd); } void goodbye() { }
Originally Posted by Adak 
