eprintf.3

'\" t
.\"     Title: eprintf
.\"    Author: [see the "AUTHOR(S)" section]
.\" Generator: Asciidoctor 1.5.7.1
.\"      Date: 2017-09-16
.\"    Manual: CS50 Programmer's Manual
.\"    Source: CS50
.\"  Language: English
.\"
.TH "EPRINTF" "3" "2017-09-16" "CS50" "CS50 Programmer\(aqs Manual"
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\fI\\$2\fP <\\$1>\\$3
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.SH "NAME"
eprintf \- prints an error message to stderr
.SH "SYNOPSIS"
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\fB#include <cs50.h>\fP
.sp
\fBvoid eprintf(const string format, ...);\fP
.SH "DESCRIPTION"
.sp
Prints an error message formatted like \fBprintf(3)\fP to standard error, prefixing it with file and line number from which the function was called. See \fBprintf(3)\fP for more on formatting.
.SH "EXAMPLE"
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.if n .RS 4
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int main(void)
{
    eprintf("This line of code should be executed\(rsn");

    int i;
    for (i = 0; i < 50; i++)
    {
        printf("i is %d\(rsn", i);
    }

    eprintf("Expected i to be 49 but it is actually %d\(rsn", i);
}
.fi
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.SH "SEE ALSO"
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printf(3)
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