neosnippet.vim/autoload/neosnippet/snippets/c.snip

snippet     if
abbr        if () {}
    if (${1:/* condition */}) {
        ${0:/* code */}
    }

snippet else
    else {
        ${0}
    }

snippet elseif
    else if (${1:/* condition */}) {
        ${0}
    }

snippet     ifelse
abbr        if () {} else {}
    if (${1:condition}) {
        ${2}
    } else {
        ${3}
    }

snippet     for
abbr        for () {}
    for (${1} = 0; $1 < ${2}; $1++) {
        ${0}
    }

snippet     while
abbr        while () {}
    while (${1:/* condition */}) {
        ${0:/* code */}
    }

snippet     do_while
alias       do
    do {
        ${0:/* code */}
    } while (${1:/* condition */});

snippet     switch
abbr        switch () {}
    switch (${1:var}) {
        case ${2:val}:
            ${0}
            break;
    }

snippet     function
alias       func
abbr        func() {}
    ${1:void} ${2:func_name}(${3}) {
        ${0}
    }

snippet     struct
abbr        struct {}
    struct ${1:name} {
        ${0:/* data */}
    };

# Typedef struct
snippet struct_typedef
    typedef struct ${1:name} {
        ${0:/* data */}
    };

snippet     enum
abbr        enum {}
    enum ${1:name} {
        ${0}
    };

# hard-tab is necessary; C indent doesn't support this.
snippet main
	int main(int argc, char const* argv[])
	{
		${0}
		return 0;
	}

# #include <...>
snippet inc
alias   #inc, #include
    #include <${1:stdio}.h>${0}
# #include "..."
snippet inc2
alias   #inc2, #include2
    #include "${1:}.h"${0}

snippet ifndef
alias   #ifndef
abbr #ifndef ... #define ... #endif
    #ifndef $1
    #define ${1:SYMBOL}
    #endif${0}

snippet def
alias   #def, #define
    #define 

# Include-Guard
snippet once
abbr include-guard
    #ifndef ${1:SYMBOL}
        #define $1

        ${0}
    #endif /* end of include guard */

# Tertiary conditional
snippet conditional
    (${1:/* condition */}) ? ${2:a} : ${3:b}

# Typedef
snippet typedef
    typedef ${1:base_type} ${2:custom_type};

snippet printf
abbr    printf("...\n", ...);
    printf("${1}\n", ${2});

snippet fprintf
abbr    fprintf(..., "...\n", ...);
    fprintf(${1:stderr}, "${2}\n"${3});

snippet comment
alias /*
    /* ${1:comment} */
    ${0}

snippet sizeof
alias size
    sizeof(${0})

snippet helloworld
    #include <stdio.h>
    int main(int argc, char const* argv[])
    {
        puts("hello, world!");
        return 0;
    }