032_ParEntrada.c File Reference

#include <stdio.h>

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Functions
int	str2int (char str[])
float	str2float (char str[])
int	main (int argc, char *argv[])

Function Documentation

main()

int main	(	int	argc,
		char *	argv[] )

Definition at line 34 of file 032_ParEntrada.c.

{
    int i;
    float s, d;
    if(argc==1)
    {
        printf("Uso: %s A B\n", argv[0]);
        return 1;
    }
    for(i=1, s=0; i<argc; i++)
    {
        d = str2float(argv[i]);
        s += d;
        printf("%d-> %f\t%f\n", i, d, s);
    }
    printf("Suma = %f\n", s);
    return 0;
}

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str2float()

float str2float

(

char

str[]

)

Definition at line 15 of file 032_ParEntrada.c.

{
    float num = 0;
    int i = str[0]=='-'?1:0, p10=10;
    while(str[i]>='0'&&str[i]<='9')
    {
        num *= 10;
        num += (str[i++]-'0');
    }
    if(str[i++]!='.')
        return str[0]=='-'?-num:num;
    while(str[i]>='0'&&str[i]<='9')
    {
        num += (str[i++]-'0')/((float)p10);
        p10 *= 10;
    }
    return str[0]=='-'?-num:num;
}

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str2int()

int str2int

(

char

str[]

)

Definition at line 3 of file 032_ParEntrada.c.

{
    int num = 0;
    int i = str[0]=='-'?1:0;
    while(str[i]>='0'&&str[i]<='9')
    {
        num *= 10;
        num += (str[i++]-'0');
    }
    return str[0]=='-'?-num:num;
}