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#include <stdio.h>
#include <stdarg.h>
#include <string.h>
//Function Prototypes
double add(int num_args, ...);
void printArray(int num_args, char** types, ...);
int main(void)
{
int v = 6, w = 3, x = 1, y = 4, z = 2;
double sum;
sum = add(5,v,w,x,y,z);
printf("main function end: %lf\n",sum);
printf("%d\n",22,v+1);
//I included the above printf to show that this code is valid and will compile.
//While this code does give warnings, there is no error and the program runs as if the 23 was not there.
//the expression still occur, but the printf does nothing else with them
char a = 'a';
short b = 69;
int c = 7;
long d = 3009;
long long e = 4567889;
float f = 3.1;
double g = 6.402;
char* array1[11] = {
"char",
"short",
"int",
"long",
"long long",
"float",
"double"
};
printf("%c, %hu, %d, %ld, %lld, %f, %lf\n",a,b,c,d,e,f,g);
printArray(7, array1, a, b, c, d, e, f, g);
return 0;
}
void printArray(int num_args, char** types,...)
{
va_list list_of_args;
va_start(list_of_args, types);
for (int i = 0; i < num_args; ++i) {
if (!strcmp(types[i], "int")) {
printf("INTEGER: %d", va_arg(list_of_args, int));
} else if (!strcmp(types[i], "long long")) {
printf("LONG: %lld", va_arg(list_of_args, long long));
} else if (!strcmp(types[i], "long")) {
printf("LONG LONG: %ld", va_arg(list_of_args, long));
} else if (!strcmp(types[i], "short")) {
printf("SHORT: %d", va_arg(list_of_args, int));
} else if (!strcmp(types[i], "char")) {
printf("CHAR: %c", va_arg(list_of_args, int));
} else if (!strcmp(types[i], "float")) {
printf("FLOAT: %lf", va_arg(list_of_args, double));
} else if (!strcmp(types[i], "double")) {
printf("DOUBLE: %lf", va_arg(list_of_args, double));
} else {
fprintf(stderr,"ERROR");
}
printf("\n");
}
va_end(list_of_args);
}
double add(int num_args, ...)
{
va_list my_list;
double i = 0, sum = 0;
va_start(my_list, num_args);
for (i = 0; i < num_args; ++i) {
printf("%lf\n",sum += va_arg(my_list, int));
}
va_end(my_list);
return sum;
}
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