The following example shows the usage of sprintf() function.Sprintf (MATLAB Functions) MATLAB Function Referenceįormats the data in matrix A (and in any additional matrix arguments) under control of the specified format string and returns it in the MATLAB string variable s. If successful, the total number of characters written is returned excluding the null-character appended at the end of the string, otherwise a negative number is returned in case of failure. There should be the same number of these arguments as the number of %-tags that expect a value. The argument is interpreted as a long double (only applies to floating point specifiers − e, E, f, g and G).Īdditional arguments − Depending on the format string, the function may expect a sequence of additional arguments, each containing one value to be inserted instead of each %-tag specified in the format parameter (if any). The argument is interpreted as a long int or unsigned long int for integer specifiers (i, d, o, u, x and X), and as a wide character or wide character string for specifiers c and s. The argument is interpreted as a short int or unsigned short int (only applies to integer specifiers: i, d, o, u, x and X). The precision is not specified in the format string, but as an additional integer value argument preceding the argument that has to be formatted. If the period is specified without an explicit value for precision, 0 is assumed.
When no precision is specified, the default is 1. By default all characters are printed until the ending null character is encountered. For s − this is the maximum number of characters to be printed. For g and G specifiers − This is the maximum number of significant digits to be printed. For e, E and f specifiers − this is the number of digits to be printed after the decimal point. A precision of 0 means that no character is written for the value 0. The value is not truncated even if the result is longer. If the value to be written is shorter than this number, the result is padded with leading zeros. The width is not specified in the format string, but as an additional integer value argument preceding the argument that has to be formatted.įor integer specifiers (d, i, o, u, x, X) − precision specifies the minimum number of digits to be written. The value is not truncated even if the result is larger. If the value to be printed is shorter than this number, the result is padded with blank spaces.
Minimum number of characters to be printed. Left-pads the number with zeroes (0) instead of spaces, where padding is specified (see width sub-specifier). Used with g or G the result is the same as with e or E but trailing zeros are not removed.
By default, if no digits follow, no decimal point is written. Used with e, E and f, it forces the written output to contain a decimal point even if no digits would follow. Used with o, x or X specifiers the value is preceded with 0, 0x or 0X respectively for values different than zero. If no sign is going to be written, a blank space is inserted before the value. By default, only negative numbers are preceded with a -ve sign.
#SPRINTF MATLAB PLUS#
Left-justify within the given field width Right justification is the default (see width sub-specifier).įorces to precede the result with a plus or minus sign (+ or -) even for positive numbers. Unsigned hexadecimal integer (capital letters) Scientific notation (mantissa/exponent) using E character Scientific notation (mantissa/exponent) using e character Format tags prototype: %specifier, as explained below − It can optionally contain embedded format tags that are replaced by the values specified in subsequent additional arguments and formatted as requested. Str − This is the pointer to an array of char elements where the resulting C string is stored.įormat − This is the String that contains the text to be written to buffer. Int sprintf(char *str, const char *format. Declarationįollowing is the declaration for sprintf() function. ) sends formatted output to a string pointed to, by str. The C library function int sprintf(char *str, const char *format.
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