cat {base}R Documentation

Concatenate and Print

Description

Prints the arguments, coercing them if necessary to character mode first.

Usage

cat(... , file = "", sep = " ", fill = FALSE, labels = NULL,
    append = FALSE)

Arguments

... R objects which are coerced to character strings, concatenated, and printed, with the remaining arguments controlling the output.
file character string naming the file to print to. If "" (the default), cat prints to the standard output.
sep character string to insert between the objects to print.
fill a logical or numeric controlling how the output is broken into successive lines. If FALSE, only newlines created explicitly by \n are printed. Otherwise, the output is broken into lines with print width equal to the option width if fill is TRUE, or the value of fill if this is numeric.
labels character vector of labels for the lines printed. Ignored if fill is FALSE.
append if TRUE, output will be appended to file; otherwise, it will overwrite the contents of file.

Details

cat converts its arguments to character strings, concatenates them, separating them by the given sep= string, and then prints them.

No linefeeds are printed unless explicitly requested by "\n" or if generated by filling (if argument fill is TRUE or numeric.)

cat is useful for producing output in user defined functions.

Value

None (invisible NULL).

See Also

print, format

Examples


## print an informative message
cat("iteration = ", iter <- iter + 1, "\n")

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